kobject: new_device->kref wasn't putted after error in kobject_move()

If error happen we jump to "out" label, in this case new_device not yet
became the parent but it wasn't putted.

Signed-off-by: Monakhov Dmitriy <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

lib/kobject.c

···
 		goto out;
 	old_parent = kobj->parent;
 	kobj->parent = new_parent;
+	new_parent = NULL;
 	kobject_put(old_parent);
 	kobject_uevent_env(kobj, KOBJ_MOVE, envp);
 out:
+	kobject_put(new_parent);
 	kobject_put(kobj);
 	kfree(devpath_string);
 	kfree(devpath);