media: sun6i-csi: capture: Remove useless ret initialization

There is no particular need to assign ret when declaring it as
it will be assigned before there is any chance to return it.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c

@@ -832,7 +832,7 @@ static int sun6i_csi_capture_open(struct file *file)
 {
 	struct sun6i_csi_device *csi_dev = video_drvdata(file);
 	struct sun6i_csi_capture *capture = &csi_dev->capture;
-	int ret = 0;
+	int ret;
 
 	if (mutex_lock_interruptible(&capture->lock))
 		return -ERESTARTSYS;