[media] DaVinci-VPIF-Capture: Delete an unnecessary variable initialisation in vpif_querystd()

The local variable "ret" will be set to an appropriate value a bit later.
Thus omit the explicit initialisation at the beginning.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/davinci/vpif_capture.c

@@ -731,7 +731,7 @@ static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 {
 	struct video_device *vdev = video_devdata(file);
 	struct channel_obj *ch = video_get_drvdata(vdev);
-	int ret = 0;
+	int ret;
 
 	vpif_dbg(2, debug, "vpif_querystd\n");