media: ov6650: fix smatch warning

Initialize ret to 0 to fix this smatch error:

drivers/media/i2c/ov6650.c:853 ov6650_video_probe() error: uninitialized symbol 'ret'.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ov6650.c

@@ -819,7 +819,7 @@ static int ov6650_video_probe(struct v4l2_subdev *sd)
 	const struct ov6650_xclk *xclk = NULL;
 	unsigned long rate;
 	u8 pidh, pidl, midh, midl;
-	int i, ret;
+	int i, ret = 0;
 
 	priv->clk = v4l2_clk_get(&client->dev, NULL);
 	if (IS_ERR(priv->clk)) {