IB/rxe: change the function to void from int

The function rxe_av_from_attr always return 0. So change the
function to void.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 621b0a7..e153441 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -271,9 +271,8 @@ static int rxe_init_av(struct rxe_dev *rxe, struct rdma_ah_attr *attr,
 		return err;
 	}
 
-	err = rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
-	if (!err)
-		err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
+	rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
+	err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid);
 
 	if (sgid_attr.ndev)
 		dev_put(sgid_attr.ndev);