[media] ivtv: add missing v4l2_fh_exit

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/ivtv/ivtv-fileops.c

@@ -980,6 +980,7 @@ static int ivtv_serialized_open(struct ivtv_stream *s, struct file *filp)
 		/* Try to claim this stream */
 		if (ivtv_claim_stream(item, item->type)) {
 			/* No, it's already in use */
+			v4l2_fh_exit(&item->fh);
 			kfree(item);
 			return -EBUSY;
 		}