diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 8ad9c6b04769..5ed9b5f8a037 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -4109,6 +4109,7 @@ err:
 	unregister_netdevice_notifier(&cma_nb);
 	rdma_addr_unregister_client(&addr_client);
 	ib_sa_unregister_client(&sa_client);
+	unregister_pernet_subsys(&cma_pernet_operations);
 err_wq:
 	destroy_workqueue(cma_wq);
 	return ret;