[NETFILTER]: Fix logging regression

Loading one of the LOG target fails if a different target has already
registered itself as backend for the same family. This can affect the
ipt_LOG and ipt_ULOG modules when both are loaded.

Reported and tested by: <t.artem@mailcity.com>

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c
index b05327ebd332..6ab99001dccc 100644
--- a/net/ipv6/netfilter/ip6t_LOG.c
+++ b/net/ipv6/netfilter/ip6t_LOG.c
@@ -493,10 +493,8 @@ static int __init ip6t_log_init(void)
         ret = xt_register_target(&ip6t_log_reg);
         if (ret < 0)
                 return ret;
-        ret = nf_log_register(PF_INET6, &ip6t_logger);
-        if (ret < 0 && ret != -EEXIST)
-                xt_unregister_target(&ip6t_log_reg);
-        return ret;
+        nf_log_register(PF_INET6, &ip6t_logger);
+        return 0;
 }
 
 static void __exit ip6t_log_fini(void)