[PATCH 5/5] netfilter: fix error return value of nf_ct_l4proto_pernet_register_one()

[Yafang Shao]

If pn is NULL, it will return 0.
That's not proper. We should return an error.

Signed-off-by: Yafang Shao <laoar.s...@gmail.com>
---
 net/netfilter/nf_conntrack_proto.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/nf_conntrack_proto.c 
b/net/netfilter/nf_conntrack_proto.c
index 316fef3..3caf137 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -252,6 +252,7 @@ int nf_ct_l4proto_pernet_register_one(struct net *net,
                        goto out;
        }
 
+       ret = -EINVAL;
        pn = nf_ct_l4proto_net(net, l4proto);
        if (pn == NULL)
                goto out;
-- 
1.8.3.1