[media] marvell-ccic: control handler fixes

No controls were reported, even though the ov7670 does have controls.

Two reasons for this: the v4l2_ctrl_handler_init() call must come
before the ov7670 is loaded (otherwise the ov7670 won't know that
its controls should be added to the bridge driver), and the
v4l2_ctrl_handler_free() call at the end should only be called if
the ret value is non-zero (otherwise you would just free all the
controls that were just added).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/marvell-ccic/mcam-core.c

@@ -1918,6 +1918,14 @@ int mccic_register(struct mcam_camera *cam)
 	INIT_LIST_HEAD(&cam->buffers);
 	mcam_ctlr_init(cam);
 
+	/*
+	 * Get the v4l2 setup done.
+	 */
+	ret = v4l2_ctrl_handler_init(&cam->ctrl_handler, 10);
+	if (ret)
+		goto out_unregister;
+	cam->v4l2_dev.ctrl_handler = &cam->ctrl_handler;
+
 	/*
 	 * Try to find the sensor.
 	 */
@@ -1934,13 +1942,6 @@ int mccic_register(struct mcam_camera *cam)
 	ret = mcam_cam_init(cam);
 	if (ret)
 		goto out_unregister;
-	/*
-	 * Get the v4l2 setup done.
-	 */
-	ret = v4l2_ctrl_handler_init(&cam->ctrl_handler, 10);
-	if (ret)
-		goto out_unregister;
-	cam->v4l2_dev.ctrl_handler = &cam->ctrl_handler;
 
 	mutex_lock(&cam->s_mutex);
 	cam->vdev = mcam_v4l_template;
@@ -1960,10 +1961,12 @@ int mccic_register(struct mcam_camera *cam)
 	}
 
 out:
-	v4l2_ctrl_handler_free(&cam->ctrl_handler);
+	if (ret)
+		v4l2_ctrl_handler_free(&cam->ctrl_handler);
 	mutex_unlock(&cam->s_mutex);
 	return ret;
 out_unregister:
+	v4l2_ctrl_handler_free(&cam->ctrl_handler);
 	v4l2_device_unregister(&cam->v4l2_dev);
 	return ret;
 }