PCI: versatile: Simplify host bridge window iteration

The switch is the only statement in the resource_list_for_each_entry()
loop, so remove unnecessary "continue" statements in the switch.  Simplify
checking for the required non-prefetchable memory aperture.

No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/host/pci-versatile.c

@@ -90,11 +90,9 @@ static int versatile_pci_parse_request_of_pci_ranges(struct device *dev,
 		switch (resource_type(res)) {
 		case IORESOURCE_IO:
 			err = pci_remap_iospace(res, iobase);
-			if (err) {
+			if (err)
 				dev_warn(dev, "error %d: failed to map resource %pR\n",
 					 err, res);
-				continue;
-			}
 			break;
 		case IORESOURCE_MEM:
 			res_valid |= !(res->flags & IORESOURCE_PREFETCH);
@@ -104,19 +102,14 @@ static int versatile_pci_parse_request_of_pci_ranges(struct device *dev,
 			mem++;
 
 			break;
-		case IORESOURCE_BUS:
-		default:
-			continue;
 		}
 	}
 
-	if (!res_valid) {
+	if (res_valid)
+		return 0;
+
 	dev_err(dev, "non-prefetchable memory resource required\n");
 	err = -EINVAL;
-		goto out_release_res;
-	}
-
-	return 0;
 
 out_release_res:
 	pci_free_resource_list(res);