backlight: lcd: Fix race condition during register

Once device_register is called for a device its attributes might be
accessed. As the callbacks of a lcd device's attributes make use of the
lcd_ops, the respective member must be setup before calling
device_register.

Signed-off-by: Uwe Kleine-König <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/lcd.c

···
 	dev_set_name(&new_ld->dev, "%s", name);
 	dev_set_drvdata(&new_ld->dev, devdata);
 
+	new_ld->ops = ops;
+
 	rc = device_register(&new_ld->dev);
 	if (rc) {
 		put_device(&new_ld->dev);
···
 		device_unregister(&new_ld->dev);
 		return ERR_PTR(rc);
 	}
-
-	new_ld->ops = ops;
 
 	return new_ld;
 }