[media] v4l: mt9v032: Consider control initialization errors as fatal

The device requires control to be properly operated, they're not
optional.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/mt9v032.c

@@ -961,9 +961,12 @@ static int mt9v032_probe(struct i2c_client *client,
 
 	mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
 
-	if (mt9v032->ctrls.error)
-		printk(KERN_INFO "%s: control initialization error %d\n",
-		       __func__, mt9v032->ctrls.error);
+	if (mt9v032->ctrls.error) {
+		dev_err(&client->dev, "control initialization error %d\n",
+			mt9v032->ctrls.error);
+		ret = mt9v032->ctrls.error;
+		goto err;
+	}
 
 	mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
 	mt9v032->crop.top = MT9V032_ROW_START_DEF;