[PATCH net] openvswitch: fix error return code in validate_and_copy_dec_ttl()

[Wang Hai]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Changing 'return start' to 'return action_start' can fix this bug.

Fixes: 69929d4c49e1 ("net: openvswitch: fix TTL decrement action netlink 
message format")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wang Hai <wangha...@huawei.com>
---
 net/openvswitch/flow_netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index ec0689ddc635..4c5c2331e764 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -2531,7 +2531,7 @@ static int validate_and_copy_dec_ttl(struct net *net,
 
        action_start = add_nested_action_start(sfa, OVS_DEC_TTL_ATTR_ACTION, 
log);
        if (action_start < 0)
-               return start;
+               return action_start;
 
        err = __ovs_nla_copy_actions(net, actions, key, sfa, eth_type,
                                     vlan_tci, mpls_label_count, log);
-- 
2.17.1