[PATCH] infiniband: hns: fix returnvar.cocci warnings

[kbuild test robot]

drivers/infiniband/hw/hisilicon/hns/hns_roce_v1_hw.c:1562:5-8: Unneeded variable: "ret". Return "0" on line 1587


 Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

CC: Wei Hu(Xavier) <xavier.huwei@xxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

Please take the patch only if it's a positive warning. Thanks!

 hns_roce_v1_hw.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/infiniband/hw/hisilicon/hns/hns_roce_v1_hw.c
+++ b/drivers/infiniband/hw/hisilicon/hns/hns_roce_v1_hw.c
@@ -1559,7 +1559,6 @@ int hns_roce_v1_req_notify_cq(struct ib_
 	struct hns_roce_cq *hr_cq = to_hr_cq(ibcq);
 	u32 notification_flag;
 	u32 doorbell[2];
-	int ret = 0;
 
 	notification_flag = (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
 		CQ_DB_REQ_NOT : CQ_DB_REQ_NOT_SOL;
@@ -1584,7 +1583,7 @@ int hns_roce_v1_req_notify_cq(struct ib_
 
 	hns_roce_write64_k(doorbell, hr_cq->cq_db_l);
 
-	return ret;
+	return 0;
 }
 
 static int hns_roce_v1_poll_one(