IB/cxgb4: use skb_put_zero()/__skb_put_zero

Use the recently introduced helper to replace the pattern of
skb_put_zero/__skb_put() && memset().
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/cxgb4/qp.c

@@ -1297,8 +1297,7 @@ static void post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe,
 
 	set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx);
 
-	wqe = __skb_put(skb, sizeof(*wqe));
-	memset(wqe, 0, sizeof *wqe);
+	wqe = __skb_put_zero(skb, sizeof(*wqe));
 	wqe->op_compl = cpu_to_be32(FW_WR_OP_V(FW_RI_INIT_WR));
 	wqe->flowid_len16 = cpu_to_be32(
 		FW_WR_FLOWID_V(qhp->ep->hwtid) |
@@ -1421,8 +1420,7 @@ static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
 
 	set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
 
-	wqe = __skb_put(skb, sizeof(*wqe));
-	memset(wqe, 0, sizeof *wqe);
+	wqe = __skb_put_zero(skb, sizeof(*wqe));
 	wqe->op_compl = cpu_to_be32(
 		FW_WR_OP_V(FW_RI_INIT_WR) |
 		FW_WR_COMPL_F);
@@ -1487,8 +1485,7 @@ static int rdma_init(struct c4iw_dev *rhp, struct c4iw_qp *qhp)
 	}
 	set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx);
 
-	wqe = __skb_put(skb, sizeof(*wqe));
-	memset(wqe, 0, sizeof *wqe);
+	wqe = __skb_put_zero(skb, sizeof(*wqe));
 	wqe->op_compl = cpu_to_be32(
 		FW_WR_OP_V(FW_RI_INIT_WR) |
 		FW_WR_COMPL_F);

drivers/infiniband/sw/rxe/rxe_net.c

@@ -565,11 +565,9 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
 
 	pkt->rxe	= rxe;
 	pkt->port_num	= port_num;
-	pkt->hdr	= skb_put(skb, paylen);
+	pkt->hdr	= skb_put_zero(skb, paylen);
 	pkt->mask	|= RXE_GRH_MASK;
 
-	memset(pkt->hdr, 0, paylen);
-
 	dev_put(ndev);
 	return skb;
 }