diff --git a/net/rds/iw.c b/net/rds/iw.c
index b732efb5b634..d16e1cbc8e83 100644
--- a/net/rds/iw.c
+++ b/net/rds/iw.c
@@ -233,8 +233,8 @@ static int rds_iw_laddr_check(__be32 addr)
 	 * IB and iWARP capable NICs.
 	 */
 	cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP);
-	if (!cm_id)
-		return -EADDRNOTAVAIL;
+	if (IS_ERR(cm_id))
+		return PTR_ERR(cm_id);
 
 	memset(&sin, 0, sizeof(sin));
 	sin.sin_family = AF_INET;