xfrm6_tunnel: join error paths using goto
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index c2b2781..80193db 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -345,24 +345,23 @@
static int __init xfrm6_tunnel_init(void)
{
if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0)
- return -EAGAIN;
-
- if (xfrm6_tunnel_register(&xfrm6_tunnel_handler, AF_INET6)) {
- xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
- return -EAGAIN;
- }
- if (xfrm6_tunnel_register(&xfrm46_tunnel_handler, AF_INET)) {
- xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
- xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
- return -EAGAIN;
- }
- if (xfrm6_tunnel_spi_init() < 0) {
- xfrm6_tunnel_deregister(&xfrm46_tunnel_handler, AF_INET);
- xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
- xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
- return -EAGAIN;
- }
+ goto err;
+ if (xfrm6_tunnel_register(&xfrm6_tunnel_handler, AF_INET6))
+ goto unreg;
+ if (xfrm6_tunnel_register(&xfrm46_tunnel_handler, AF_INET))
+ goto dereg6;
+ if (xfrm6_tunnel_spi_init() < 0)
+ goto dereg46;
return 0;
+
+dereg46:
+ xfrm6_tunnel_deregister(&xfrm46_tunnel_handler, AF_INET);
+dereg6:
+ xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6);
+unreg:
+ xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
+err:
+ return -EAGAIN;
}
static void __exit xfrm6_tunnel_fini(void)