RDMA/rxe: Fix minor coding style issues

checkpatch -f found 3 warnings in RDMA/rxe

1. a missing space following switch
2. return followed by else
3. use of strlcpy() instead of strscpy().

This patch fixes each of these. In

		...
	} elseif (...) {
		...
		return 0;
	} else
		...

The middle block can be safely moved since it is completely independent of
the other code.

Link: https://lore.kernel.org/r/20210205230525.49068-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_qp.c

@@ -62,7 +62,7 @@ int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init)
 	struct rxe_port *port;
 	int port_num = init->port_num;
 
-	switch(init->qp_type) {
+	switch (init->qp_type) {
 	case IB_QPT_SMI:
 	case IB_QPT_GSI:
 	case IB_QPT_RC:

drivers/infiniband/sw/rxe/rxe_verbs.c

@@ -566,6 +566,13 @@ static int init_send_wqe(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
 
 	init_send_wr(qp, &wqe->wr, ibwr);
 
+	/* local operation */
+	if (unlikely(mask & WR_REG_MASK)) {
+		wqe->mask = mask;
+		wqe->state = wqe_state_posted;
+		return 0;
+	}
+
 	if (qp_type(qp) == IB_QPT_UD ||
 	    qp_type(qp) == IB_QPT_SMI ||
 	    qp_type(qp) == IB_QPT_GSI)
@@ -581,13 +588,10 @@ static int init_send_wqe(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
 
 			p += sge->length;
 		}
-	} else if (mask & WR_REG_MASK) {
-		wqe->mask = mask;
-		wqe->state = wqe_state_posted;
-		return 0;
-	} else
+	} else {
 		memcpy(wqe->dma.sge, ibwr->sg_list,
 		       num_sge * sizeof(struct ib_sge));
+	}
 
 	wqe->iova = mask & WR_ATOMIC_MASK ? atomic_wr(ibwr)->remote_addr :
 		mask & WR_READ_OR_WRITE_MASK ? rdma_wr(ibwr)->remote_addr : 0;
@@ -1118,7 +1122,7 @@ int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name)
 	struct ib_device *dev = &rxe->ib_dev;
 	struct crypto_shash *tfm;
 
-	strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
+	strscpy(dev->node_desc, "rxe", sizeof(dev->node_desc));
 
 	dev->node_type = RDMA_NODE_IB_CA;
 	dev->phys_port_cnt = 1;