diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index e7c7e3ab4b383b606b09d7887e0e3a1bb9132466..09d68b0b4a13e6846009073ac50ca5ff93a6cc52 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -1146,8 +1146,10 @@ static int ov5647_set_fmt(struct v4l2_subdev *sd,
 	else
 		mode = mode_8bit;
 
-	if (!mode)
+	if (!mode) {
+		mutex_unlock(&state->lock);
 		return -EINVAL;
+	}
 
 	*fmt = mode->format;
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {