media: imx274: declare the correct number of controls

v4l2_ctrl_handler_init() expects a hint of how many controls this
handler is expected to refer to. Since this number here is always 4,
let's pass exactly 4.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/imx274.c

@@ -1904,7 +1904,7 @@ static int imx274_probe(struct i2c_client *client,
 	imx274_reset(imx274, 1);
 
 	/* initialize controls */
-	ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 2);
+	ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 4);
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"%s : ctrl handler init Failed\n", __func__);