net: hns3: use memcpy to simplify code

mainline inclusion
from mainline-v5.15-rc1
commit 304cd8e7
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4BY3P
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=304cd8e776ddca5021dd9c1d7603ea40afc48ec6

----------------------------------------------------------------------

Use memcpy to copy req->msg.resp_data to resp->additional_info,
to simplify the code and improve a little efficiency.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Reviewed-by: NYongxin Li <liyongxin1@huawei.com>
Signed-off-by: NJunxin Chen <chenjunxin1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c

@@ -163,8 +163,6 @@ void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
 	struct hclgevf_desc *desc;
 	u16 *msg_q;
 	u16 flag;
-	u8 *temp;
-	int i;
 
 	resp = &hdev->mbx_resp;
 	crq = &hdev->hw.cmq.crq;
@@ -212,11 +210,8 @@ void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
 			resp->resp_status =
 				hclgevf_resp_to_errno(req->msg.resp_status);
 
-			temp = (u8 *)req->msg.resp_data;
-			for (i = 0; i < HCLGE_MBX_MAX_RESP_DATA_SIZE; i++) {
-				resp->additional_info[i] = *temp;
-				temp++;
-			}
+			memcpy(resp->additional_info, req->msg.resp_data,
+			       HCLGE_MBX_MAX_RESP_DATA_SIZE * sizeof(u8));
 
 			/* If match_id is not zero, it means PF support
 			 * match_id. If the match_id is right, VF get the