[PATCH] Fix class_register() always returns 0

I noticed that the class_register() function in drivers/base/class.c
always returns 0 and thus will never fail.  Patch below inserts simple
error checking to return any errors if they occur.  Feedback welcome.
Thanks,

drivers/base/class.c

@@ -102,13 +102,21 @@ void class_put(struct class * cls)
 
 int class_register(struct class * cls)
 {
+	int error;
+
 	pr_debug("device class '%s': registering\n",cls->name);
 
 	INIT_LIST_HEAD(&cls->children);
 	INIT_LIST_HEAD(&cls->interfaces);
-	kobject_set_name(&cls->subsys.kset.kobj,cls->name);
+	error = kobject_set_name(&cls->subsys.kset.kobj,cls->name);
+	if (error)
+		return error;
+
 	subsys_set_kset(cls,class_subsys);
-	subsystem_register(&cls->subsys);
+
+	error = subsystem_register(&cls->subsys);
+	if (error)
+		return error;
 
 	return 0;
 }