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>

diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c
index 83739b2..62070b9 100644
--- a/drivers/media/video/pwc/pwc-if.c
+++ b/drivers/media/video/pwc/pwc-if.c
@@ -867,8 +867,7 @@
 	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;