diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 95e89f5c147c..4f5fd47086ab 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -2031,6 +2031,8 @@ static void destroy_mc(struct rdma_id_private *id_priv,
 		dev_put(ndev);
 
 		cancel_work_sync(&mc->iboe_join.work);
+		if (event->event == RDMA_CM_EVENT_MULTICAST_JOIN)
+			rdma_destroy_ah_attr(&event->param.ud.ah_attr);
 	}
 	kfree(mc);
 }