RDMA/hns: Remove if-else judgment statements for creating srq

Because if the value of srqwqe_buf_pg_sz is zero, npages and
ib_umem_page_count are equivalent, page_shif and PAGE_SHIFT
are equivalent in hns_roce_create_srq. Here remove it.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Link: https://lore.kernel.org/r/1566393276-42555-8-git-send-email-oulijun@huawei.com
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hns/hns_roce_srq.c

@@ -191,15 +191,11 @@ static int create_user_srq(struct hns_roce_srq *srq, struct ib_udata *udata,
 	if (IS_ERR(srq->umem))
 		return PTR_ERR(srq->umem);
 
-	if (hr_dev->caps.srqwqe_buf_pg_sz) {
-		npages = (ib_umem_page_count(srq->umem) +
-			 (1 << hr_dev->caps.srqwqe_buf_pg_sz) - 1) /
-			 (1 << hr_dev->caps.srqwqe_buf_pg_sz);
-		page_shift = PAGE_SHIFT + hr_dev->caps.srqwqe_buf_pg_sz;
-		ret = hns_roce_mtt_init(hr_dev, npages, page_shift, &srq->mtt);
-	} else
-		ret = hns_roce_mtt_init(hr_dev, ib_umem_page_count(srq->umem),
-					PAGE_SHIFT, &srq->mtt);
+	npages = (ib_umem_page_count(srq->umem) +
+		(1 << hr_dev->caps.srqwqe_buf_pg_sz) - 1) /
+		(1 << hr_dev->caps.srqwqe_buf_pg_sz);
+	page_shift = PAGE_SHIFT + hr_dev->caps.srqwqe_buf_pg_sz;
+	ret = hns_roce_mtt_init(hr_dev, npages, page_shift, &srq->mtt);
 	if (ret)
 		goto err_user_buf;
 
@@ -216,19 +212,8 @@ static int create_user_srq(struct hns_roce_srq *srq, struct ib_udata *udata,
 		goto err_user_srq_mtt;
 	}
 
-	if (hr_dev->caps.idx_buf_pg_sz) {
-		npages = (ib_umem_page_count(srq->idx_que.umem) +
-			 (1 << hr_dev->caps.idx_buf_pg_sz) - 1) /
-			 (1 << hr_dev->caps.idx_buf_pg_sz);
-		page_shift = PAGE_SHIFT + hr_dev->caps.idx_buf_pg_sz;
-		ret = hns_roce_mtt_init(hr_dev, npages, page_shift,
-					&srq->idx_que.mtt);
-	} else {
-		ret = hns_roce_mtt_init(hr_dev,
-					ib_umem_page_count(srq->idx_que.umem),
-					PAGE_SHIFT,
-					&srq->idx_que.mtt);
-	}
+	ret = hns_roce_mtt_init(hr_dev, ib_umem_page_count(srq->idx_que.umem),
+				PAGE_SHIFT, &srq->idx_que.mtt);
 
 	if (ret) {
 		dev_err(hr_dev->dev, "hns_roce_mtt_init error for idx que\n");