Cleanup the addconf_sysctl_register

index f177424..2d2886a 100644
@@ -4127,7 +4127,8 @@ static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf
 
 	t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
 	if (t == NULL)
-		return;
+		goto out;
+
 	for (i=0; t->addrconf_vars[i].data; i++) {
 		t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
 		t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */

@@ -4147,7 +4148,7 @@ static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf
 	 */
 	dev_name = kstrdup(dev_name, GFP_KERNEL);
 	if (!dev_name)
-	    goto free;
+		goto free;
 
 	t->addrconf_dev[0].procname = dev_name;
 

@@ -4159,16 +4160,15 @@ static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf
 	t->sysctl_header = register_sysctl_table(t->addrconf_root_dir);
 	if (t->sysctl_header == NULL)
 		goto free_procname;
-	else
-		p->sysctl = t;
+
+	p->sysctl = t;
 	return;
 
-	/* error path */
- free_procname:
+free_procname:
 	kfree(dev_name);
- free:
+free:
 	kfree(t);
-
+out:
 	return;
 }