media: imx274: Fix error handling, add MAINTAINERS entry

Add the missing MAINTAINERS entry for imx274, fix error handling in driver
probe and unregister the correct control handler in driver remove.

Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

MAINTAINERS

···
 F:	drivers/ssb/
 F:	include/linux/ssb/
 
+SONY IMX274 SENSOR DRIVER
+M:	Leon Luo <[e-mail]>
+L:	[e-mail]
+T:	git git://linuxtv.org/media_tree.git
+S:	Maintained
+F:	drivers/media/i2c/imx274.c
+F:	Documentation/devicetree/bindings/media/i2c/imx274.txt
+
 SONY MEMORYSTICK CARD SUPPORT
 M:	Alex Dubov <[e-mail]>
 W:	http://tifmxx.berlios.de/

drivers/media/i2c/imx274.c

···
 	return 0;
 
 err_ctrls:
-	v4l2_async_unregister_subdev(sd);
-	v4l2_ctrl_handler_free(sd->ctrl_handler);
+	v4l2_ctrl_handler_free(&imx274->ctrls.handler);
 err_me:
 	media_entity_cleanup(&sd->entity);
 err_regmap:
···
 	imx274_write_table(imx274, mode_table[IMX274_MODE_STOP_STREAM]);
 
 	v4l2_async_unregister_subdev(sd);
-	v4l2_ctrl_handler_free(sd->ctrl_handler);
+	v4l2_ctrl_handler_free(&imx274->ctrls.handler);
 	media_entity_cleanup(&sd->entity);
 	mutex_destroy(&imx274->lock);
 	return 0;