thunderbolt: Get rid of redundant 'else'

In the snippets like the following

	if (...)
		return / goto / break / continue ...;
	else
		...

the 'else' is redundant. Get rid of it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/acpi.c

@@ -341,7 +341,7 @@ static struct acpi_device *tb_acpi_find_companion(struct device *dev)
 	 */
 	if (tb_is_switch(dev))
 		return tb_acpi_switch_find_companion(tb_to_switch(dev));
-	else if (tb_is_usb4_port_device(dev))
+	if (tb_is_usb4_port_device(dev))
 		return acpi_find_child_by_adr(ACPI_COMPANION(dev->parent),
 					      tb_to_usb4_port_device(dev)->port->port);
 	return NULL;

drivers/thunderbolt/ctl.c

@@ -1033,7 +1033,7 @@ static int tb_cfg_get_error(struct tb_ctl *ctl, enum tb_cfg_space space,
 
 	if (res->tb_error == TB_CFG_ERROR_LOCK)
 		return -EACCES;
-	else if (res->tb_error == TB_CFG_ERROR_PORT_NOT_CONNECTED)
+	if (res->tb_error == TB_CFG_ERROR_PORT_NOT_CONNECTED)
 		return -ENOTCONN;
 
 	return -EIO;

drivers/thunderbolt/nhi.c

@@ -515,7 +515,8 @@ static int nhi_alloc_hop(struct tb_nhi *nhi, struct tb_ring *ring)
 			 ring->hop);
 		ret = -EBUSY;
 		goto err_unlock;
-	} else if (!ring->is_tx && nhi->rx_rings[ring->hop]) {
+	}
+	if (!ring->is_tx && nhi->rx_rings[ring->hop]) {
 		dev_warn(&nhi->pdev->dev, "RX hop %d already allocated\n",
 			 ring->hop);
 		ret = -EBUSY;

drivers/thunderbolt/switch.c

@@ -271,9 +271,9 @@ static int nvm_authenticate(struct tb_switch *sw, bool auth_only)
 		}
 		sw->nvm->authenticating = true;
 		return usb4_switch_nvm_authenticate(sw);
-	} else if (auth_only) {
-		return -EOPNOTSUPP;
 	}
+	if (auth_only)
+		return -EOPNOTSUPP;
 
 	sw->nvm->authenticating = true;
 	if (!tb_route(sw)) {

drivers/thunderbolt/usb4.c

@@ -851,7 +851,7 @@ bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in)
 	 */
 	if (ret == -EOPNOTSUPP)
 		return true;
-	else if (ret)
+	if (ret)
 		return false;
 
 	return !status;
@@ -877,7 +877,7 @@ int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
 			     &status);
 	if (ret == -EOPNOTSUPP)
 		return 0;
-	else if (ret)
+	if (ret)
 		return ret;
 
 	return status ? -EBUSY : 0;
@@ -900,7 +900,7 @@ int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
 			     &status);
 	if (ret == -EOPNOTSUPP)
 		return 0;
-	else if (ret)
+	if (ret)
 		return ret;
 
 	return status ? -EIO : 0;

drivers/thunderbolt/xdomain.c

@@ -1178,9 +1178,8 @@ static int tb_xdomain_get_uuid(struct tb_xdomain *xd)
 		if (xd->state_retries-- > 0) {
 			dev_dbg(&xd->dev, "failed to request UUID, retrying\n");
 			return -EAGAIN;
-		} else {
-			dev_dbg(&xd->dev, "failed to read remote UUID\n");
 		}
+		dev_dbg(&xd->dev, "failed to read remote UUID\n");
 		return ret;
 	}
 
@@ -1367,12 +1366,10 @@ static int tb_xdomain_get_properties(struct tb_xdomain *xd)
 			dev_dbg(&xd->dev,
 				"failed to request remote properties, retrying\n");
 			return -EAGAIN;
-		} else {
-			/* Give up now */
-			dev_err(&xd->dev,
-				"failed read XDomain properties from %pUb\n",
-				xd->remote_uuid);
 		}
+		/* Give up now */
+		dev_err(&xd->dev, "failed read XDomain properties from %pUb\n",
+			xd->remote_uuid);
 
 		return ret;
 	}
@@ -2179,13 +2176,12 @@ static struct tb_xdomain *switch_find_xdomain(struct tb_switch *sw,
 				if (xd->remote_uuid &&
 				    uuid_equal(xd->remote_uuid, lookup->uuid))
 					return xd;
-			} else if (lookup->link &&
-				   lookup->link == xd->link &&
-				   lookup->depth == xd->depth) {
-				return xd;
-			} else if (lookup->route &&
-				   lookup->route == xd->route) {
-				return xd;
+			} else {
+				if (lookup->link && lookup->link == xd->link &&
+				    lookup->depth == xd->depth)
+					return xd;
+				if (lookup->route && lookup->route == xd->route)
+					return xd;
 			}
 		} else if (tb_port_has_remote(port)) {
 			xd = switch_find_xdomain(port->remote->sw, lookup);