[PATCH 2.6 6/7]: Fix free_netdev after failed alloc_netdev in sit_init

[Patrick McHardy <kaber@xxxxxxxxx>]

Same problem as in ip_gre.c and ipip.c:
Passing a NULL-ptr to free_netdev is wrong.


# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/10/03 20:43:32+02:00 kaber@xxxxxxxxxxxx 
#   [IPV6]: Fix free_netdev after failed alloc_netdev in sit_init
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
# net/ipv6/sit.c
#   2004/10/03 20:43:09+02:00 kaber@xxxxxxxxxxxx +5 -4
#   [IPV6]: Fix free_netdev after failed alloc_netdev in sit_init
#   
#   Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
# 
diff -Nru a/net/ipv6/sit.c b/net/ipv6/sit.c
--- a/net/ipv6/sit.c    2004-10-03 22:21:06 +02:00
+++ b/net/ipv6/sit.c    2004-10-03 22:21:06 +02:00
@@ -814,18 +814,19 @@
                                           ipip6_tunnel_setup);
        if (!ipip6_fb_tunnel_dev) {
                err = -ENOMEM;
-               goto fail;
+               goto err1;
        }
 
        ipip6_fb_tunnel_dev->init = ipip6_fb_tunnel_init;
 
        if ((err =  register_netdev(ipip6_fb_tunnel_dev)))
-               goto fail;
+               goto err2;
 
  out:
        return err;
- fail:
-       inet_del_protocol(&sit_protocol, IPPROTO_IPV6);
+ err2:
        free_netdev(ipip6_fb_tunnel_dev);
+ err1:
+       inet_del_protocol(&sit_protocol, IPPROTO_IPV6);
        goto out;
 }