hinic: fix a bug in set rx mode

hinic: fix a bug in set rx mode

BugLink: https://bugs.launchpad.net/bugs/1832048
in set_rx_mode, __dev_mc_sync and netdev_for_each_mc_addr will
repeatedly set the multicast mac address. so we delete this loop.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 66350023d57560b2ead168af098fc507e58d8e6a linux-next)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>