staging: remove unnecessary code

Compile tested.
remove unnecessary code that matches this coccinelle pattern
	if (...)
		return ret;
	return ret;
Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Acked-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/bcm/Misc.c

@@ -1447,16 +1447,10 @@ static void convertEndian(B_UINT8 rwFlag, PUINT puiBuffer, UINT uiByteCount)
 
 int rdm(PMINI_ADAPTER Adapter, UINT uiAddress, PCHAR pucBuff, size_t sSize)
 {
-	INT uiRetVal =0;
-
-	uiRetVal = Adapter->interface_rdm(Adapter->pvInterfaceAdapter,
+	return Adapter->interface_rdm(Adapter->pvInterfaceAdapter,
 			uiAddress, pucBuff, sSize);
-
-	if(uiRetVal < 0)
-		return uiRetVal;
-
-	return uiRetVal;
 }
+
 int wrm(PMINI_ADAPTER Adapter, UINT uiAddress, PCHAR pucBuff, size_t sSize)
 {
 	int iRetVal;

drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c

@@ -4164,13 +4164,7 @@ s32 wl_cfg80211_down(void)
 
 static s32 wl_dongle_probecap(struct wl_priv *wl)
 {
-	s32 err = 0;
-
-	err = wl_update_wiphybands(wl);
-	if (unlikely(err))
-		return err;
-
-	return err;
+	return wl_update_wiphybands(wl);
 }
 
 static void *wl_read_prof(struct wl_priv *wl, s32 item)

drivers/staging/comedi/comedi_fops.c

@@ -1291,10 +1291,10 @@ static int do_lock_ioctl(struct comedi_device *dev, unsigned int arg,
 		s->lock = file;
 	spin_unlock_irqrestore(&s->spin_lock, flags);
 
+#if 0
 	if (ret < 0)
 		return ret;
 
-#if 0
 	if (s->lock_f)
 		ret = s->lock_f(dev, s);
 #endif

drivers/staging/comedi/drivers/usbdux.c

@@ -1935,11 +1935,8 @@ static int usbdux_pwm_cancel(struct comedi_device *dev,
 	dev_dbg(&this_usbduxsub->interface->dev,
 		"comedi %d: sending pwm off command to the usb device.\n",
 		dev->minor);
-	res = send_dux_commands(this_usbduxsub, SENDPWMOFF);
-	if (res < 0)
-		return res;
 
-	return res;
+	return send_dux_commands(this_usbduxsub, SENDPWMOFF);
 }
 
 static void usbduxsub_pwm_irq(struct urb *urb)

drivers/staging/tm6000/tm6000-cards.c

@@ -994,11 +994,7 @@ static int fill_board_specific_data(struct tm6000_core *dev)
 	if (rc < 0)
 		return rc;
 
-	rc = v4l2_device_register(&dev->udev->dev, &dev->v4l2_dev);
-	if (rc < 0)
-		return rc;
-
-	return rc;
+	return v4l2_device_register(&dev->udev->dev, &dev->v4l2_dev);
 }