[PATCH 1/1] rds: fix memory leak error

[Zhu Yanjun]

When the function register_netdevice_notifier fails, the memory
allocated by kmem_cache_create should be freed by the function
kmem_cache_destroy.

Cc: Joe Jin <joe....@oracle.com>
Cc: Junxiao Bi <junxiao...@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun....@oracle.com>
---
 net/rds/tcp.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 57bb523..5438f67 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -641,12 +641,12 @@ static int rds_tcp_init(void)
        ret = register_netdevice_notifier(&rds_tcp_dev_notifier);
        if (ret) {
                pr_warn("could not register rds_tcp_dev_notifier\n");
-               goto out;
+               goto out_slab;
        }
 
        ret = register_pernet_subsys(&rds_tcp_net_ops);
        if (ret)
-               goto out_slab;
+               goto out_notifier;
 
        ret = rds_tcp_recv_init();
        if (ret)
@@ -664,9 +664,10 @@ static int rds_tcp_init(void)
        rds_tcp_recv_exit();
 out_pernet:
        unregister_pernet_subsys(&rds_tcp_net_ops);
-out_slab:
+out_notifier:
        if (unregister_netdevice_notifier(&rds_tcp_dev_notifier))
                pr_warn("could not unregister rds_tcp_dev_notifier\n");
+out_slab:
        kmem_cache_destroy(rds_tcp_conn_slab);
 out:
        return ret;
-- 
2.7.4