RDMA/hns: Don't overwrite supplied QP attributes

mainline inclusion
from mainline-v5.15-rc1
commit e66e4959
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QOTS
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id=e66e49592b690d6abd537cc207b07a3db2f413d0

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QP attributes that were supplied by IB/core already have all parameters
set when they are passed to the driver. The drivers are not supposed to
change anything in struct ib_qp_init_attr.

Fixes: 66d86e52 ("RDMA/hns: Add UD support for HIP09")
Link: https://lore.kernel.org/r/5987138875e8ade9aa339d4db6e1bd9694ed4591.1627040189.git.leonro@nvidia.com


Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
sigend-off-by: Guofeng Yue <yueguofeng@hisilicon.com>

Reviewed-by: Yangyang Li <liyangyang20@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>