net: hns3: arp cleancode

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8M1F3


CVE: NA

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

The hns3_roh_arp_reply_idx_move_fd(idx) macro is added in an incorrect
way. As a result, the logic does not meet the expectation and the
NETDEV_TX_BUSY message is repeatedly reported.

Fixes: 0b68f477 ("net: hns3: support arp proxy")
Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>