usb: pwc-if free urb cleanup

- usb_free_urb() cleanup
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/media/video/pwc/pwc-if.c

@@ -867,8 +867,7 @@ int pwc_isoc_init(struct pwc_device *pdev)
 	if (ret) {
 		/* De-allocate in reverse order */
 		while (i--) {
-			if (pdev->sbuf[i].urb != NULL)
-				usb_free_urb(pdev->sbuf[i].urb);
+			usb_free_urb(pdev->sbuf[i].urb);
 			pdev->sbuf[i].urb = NULL;
 		}
 		return ret;