V4L/DVB (8857): v4l2-dev: replace panic with BUG

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 02b9cc7..7addf2f 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -91,8 +91,11 @@
 	struct video_device *vfd = container_of(kobj, struct video_device, cdev.kobj);
 
 	mutex_lock(&videodev_lock);
-	if (video_device[vfd->minor] != vfd)
-		panic("videodev: bad release");
+	if (video_device[vfd->minor] != vfd) {
+		mutex_unlock(&videodev_lock);
+		BUG();
+		return;
+	}
 
 	/* Free up this device for reuse */
 	video_device[vfd->minor] = NULL;