net: fib_rules: fix error code for unsupported families

The errno code returned must be negative.

Fixes "RTNETLINK answers: Unknown error 18446744073709551519".

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

1 files changed, 2 insertions, 2 deletions

diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index e3e9ab0f74e..277a2302eb3 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -226,7 +226,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 
         ops = lookup_rules_ops(net, frh->family);
         if (ops == NULL) {
-                err = EAFNOSUPPORT;
+                err = -EAFNOSUPPORT;
                 goto errout;
         }
 
@@ -365,7 +365,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 
         ops = lookup_rules_ops(net, frh->family);
         if (ops == NULL) {
-                err = EAFNOSUPPORT;
+                err = -EAFNOSUPPORT;
                 goto errout;
         }