Input: fix resetting name, phys and uniq when unregistering device

It should be done before calling class_device_unregister() because
it will destroy the device and free memory if there are no other
references to the device.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/input/input.c

@@ -998,12 +998,13 @@ void input_unregister_device(struct input_dev *dev)
 	sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group);
 	sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group);
 	sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group);
-	class_device_unregister(&dev->cdev);
 
 	mutex_lock(&dev->mutex);
 	dev->name = dev->phys = dev->uniq = NULL;
 	mutex_unlock(&dev->mutex);
 
+	class_device_unregister(&dev->cdev);
+
 	input_wakeup_procfs_readers();
 }
 EXPORT_SYMBOL(input_unregister_device);