[IPV4]: Fix error handling for fib_insert_node call

The error handling around fib_insert_node was broken because we always
zeroed the error before checking it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 1cb65305e102..23fb9d9768e3 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1252,8 +1252,8 @@ fn_trie_insert(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
          */
 
         if (!fa_head) {
-                fa_head = fib_insert_node(t, &err, key, plen);
                 err = 0;
+                fa_head = fib_insert_node(t, &err, key, plen);
                 if (err)
                         goto out_free_new_fa;
         }