[PATCH net-next] tipc: remove ub->ubsock checks

[Xin Long]

Both tipc_udp_enable and tipc_udp_disable are called under rtnl_lock,
ub->ubsock could never be NULL in tipc_udp_disable and cleanup_bearer,
so remove the check.

Also remove the one in tipc_udp_enable by adding "free" label.

Signed-off-by: Xin Long <lucien....@gmail.com>
---
 net/tipc/udp_media.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 62b85db..287df687 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -759,7 +759,7 @@ static int tipc_udp_enable(struct net *net, struct 
tipc_bearer *b,
 
        err = dst_cache_init(&ub->rcast.dst_cache, GFP_ATOMIC);
        if (err)
-               goto err;
+               goto free;
 
        /**
         * The bcast media address port is used for all peers and the ip
@@ -771,13 +771,14 @@ static int tipc_udp_enable(struct net *net, struct 
tipc_bearer *b,
        else
                err = tipc_udp_rcast_add(b, &remote);
        if (err)
-               goto err;
+               goto free;
 
        return 0;
-err:
+
+free:
        dst_cache_destroy(&ub->rcast.dst_cache);
-       if (ub->ubsock)
-               udp_tunnel_sock_release(ub->ubsock);
+       udp_tunnel_sock_release(ub->ubsock);
+err:
        kfree(ub);
        return err;
 }
@@ -795,8 +796,7 @@ static void cleanup_bearer(struct work_struct *work)
        }
 
        dst_cache_destroy(&ub->rcast.dst_cache);
-       if (ub->ubsock)
-               udp_tunnel_sock_release(ub->ubsock);
+       udp_tunnel_sock_release(ub->ubsock);
        synchronize_net();
        kfree(ub);
 }
@@ -811,8 +811,7 @@ static void tipc_udp_disable(struct tipc_bearer *b)
                pr_err("UDP bearer instance not found\n");
                return;
        }
-       if (ub->ubsock)
-               sock_set_flag(ub->ubsock->sk, SOCK_DEAD);
+       sock_set_flag(ub->ubsock->sk, SOCK_DEAD);
        RCU_INIT_POINTER(ub->bearer, NULL);
 
        /* sock_release need to be done outside of rtnl lock */
-- 
2.1.0