[PATCH 4.4 56/68] RDS: fix rds_tcp_init() error path

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Vegard Nossum commit 3dad5424adfb346c871847d467f97dcdca64ea97 upstream. If register_pernet_subsys() fails, we shouldn't try to call unregister_pernet_subsys().

[PATCH 4.4 56/68] RDS: fix rds_tcp_init() error path

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Vegard Nossum commit 3dad5424adfb346c871847d467f97dcdca64ea97 upstream. If register_pernet_subsys() fails, we shouldn't try to call unregister_pernet_subsys(). Fixes: 467fa15356 ("RDS-TCP: