[media] mt9v022: fix potential NULL pointer dereference in mt9v022_probe()

The dereference to 'icl' should be moved below the NULL test.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/i2c/soc_camera/mt9v022.c

@@ -875,7 +875,7 @@ static int mt9v022_probe(struct i2c_client *client,
 	struct mt9v022 *mt9v022;
 	struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
 	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
-	struct mt9v022_platform_data *pdata = icl->priv;
+	struct mt9v022_platform_data *pdata;
 	int ret;
 
 	if (!icl) {
@@ -893,6 +893,7 @@ static int mt9v022_probe(struct i2c_client *client,
 	if (!mt9v022)
 		return -ENOMEM;
 
+	pdata = icl->priv;
 	v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops);
 	v4l2_ctrl_handler_init(&mt9v022->hdl, 6);
 	v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops,