RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp

The the below commit, hns_roce_v2_modify_qp is called inside spinlock
while using GFP_KERNEL. Change it to GFP_ATOMIC.

Fixes: 0425e3e6 ("RDMA/hns: Support flush cqe for hip08 in kernel space")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -4027,7 +4027,7 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp,
 	struct device *dev = hr_dev->dev;
 	int ret = -EINVAL;
 
-	context = kcalloc(2, sizeof(*context), GFP_KERNEL);
+	context = kcalloc(2, sizeof(*context), GFP_ATOMIC);
 	if (!context)
 		return -ENOMEM;