net: hns3: restore user pause configure when disable autoneg

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7B8SA


CVE: NA

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Restore the mac pause state to user configuration when autoneg is disabled

Fixes: 1770a7a3 ("net: hns3: add support to update flow control settings after autoneg")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
(cherry picked from commit ae9425eb)