niu: Fix error checking in niu_ethflow_to_class.

The callers of niu_ethflow_to_class expect zero as error, but it returns
-1 instead.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index 8ee7d7bb951b..e4765b713aba 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -6417,7 +6417,7 @@ static int niu_ethflow_to_class(int flow_type, u64 *class)
                 *class = CLASS_CODE_SCTP_IPV6;
                 break;
         default:
-                return -1;
+                return 0;
         }
 
         return 1;