[PATCH] openvswitch: Fix a possible memory leak on dst_cache

[Haishuang Yan]

dst_cache should be destroyed when fail to add flow actions.

Fixes: d71785ffc7e7 ("net: add dst_cache to ovs vxlan lwtunnel")
Signed-off-by: Haishuang Yan <yanhaishu...@cmss.chinamobile.com>
---
 net/openvswitch/flow_netlink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index d7559c6..1fd1cdd 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -2608,6 +2608,7 @@ static int validate_and_copy_set_tun(const struct nlattr 
*attr,
                         sizeof(*ovs_tun), log);
        if (IS_ERR(a)) {
                dst_release((struct dst_entry *)tun_dst);
+               dst_cache_destroy(&tun_dst->u.tun_info.dst_cache);
                return PTR_ERR(a);
        }
 
-- 
1.8.3.1