net,pppoe: fixup module init/exit subsequent calls

pernet data should allocated first and freed last
on module init/exit routines otherwise it's possible
to have unserialized calls to packet handling routines.
Signed-off-by: NCyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/pppoe.c

@@ -1185,17 +1185,17 @@ static int __init pppoe_init(void)
 {
 	int err;
 
-	err = proto_register(&pppoe_sk_proto, 0);
+	err = register_pernet_gen_device(&pppoe_net_id, &pppoe_net_ops);
 	if (err)
 		goto out;
 
-	err = register_pppox_proto(PX_PROTO_OE, &pppoe_proto);
+	err = proto_register(&pppoe_sk_proto, 0);
 	if (err)
-		goto out_unregister_pppoe_proto;
+		goto out_unregister_net_ops;
 
-	err = register_pernet_gen_device(&pppoe_net_id, &pppoe_net_ops);
+	err = register_pppox_proto(PX_PROTO_OE, &pppoe_proto);
 	if (err)
-		goto out_unregister_pppox_proto;
+		goto out_unregister_pppoe_proto;
 
 	dev_add_pack(&pppoes_ptype);
 	dev_add_pack(&pppoed_ptype);
@@ -1203,22 +1203,22 @@ static int __init pppoe_init(void)
 
 	return 0;
 
-out_unregister_pppox_proto:
-	unregister_pppox_proto(PX_PROTO_OE);
 out_unregister_pppoe_proto:
 	proto_unregister(&pppoe_sk_proto);
+out_unregister_net_ops:
+	unregister_pernet_gen_device(pppoe_net_id, &pppoe_net_ops);
 out:
 	return err;
 }
 
 static void __exit pppoe_exit(void)
 {
-	unregister_pppox_proto(PX_PROTO_OE);
-	dev_remove_pack(&pppoes_ptype);
-	dev_remove_pack(&pppoed_ptype);
 	unregister_netdevice_notifier(&pppoe_notifier);
-	unregister_pernet_gen_device(pppoe_net_id, &pppoe_net_ops);
+	dev_remove_pack(&pppoed_ptype);
+	dev_remove_pack(&pppoes_ptype);
+	unregister_pppox_proto(PX_PROTO_OE);
 	proto_unregister(&pppoe_sk_proto);
+	unregister_pernet_gen_device(pppoe_net_id, &pppoe_net_ops);
 }
 
 module_init(pppoe_init);