igb: use eth_zero_addr() to clear mac address

Use eth_zero_addr() to clear mac address instead of memset().
Signed-off-by: NMiaohe Lin <linmiaohe@huawei.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igb/igb_main.c

@@ -7159,7 +7159,7 @@ static void igb_flush_mac_table(struct igb_adapter *adapter)
 
 	for (i = 0; i < hw->mac.rar_entry_count; i++) {
 		adapter->mac_table[i].state &= ~IGB_MAC_STATE_IN_USE;
-		memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+		eth_zero_addr(adapter->mac_table[i].addr);
 		adapter->mac_table[i].queue = 0;
 		igb_rar_set_index(adapter, i);
 	}
@@ -7308,7 +7308,7 @@ static int igb_del_mac_filter_flags(struct igb_adapter *adapter,
 		} else {
 			adapter->mac_table[i].state = 0;
 			adapter->mac_table[i].queue = 0;
-			memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+			eth_zero_addr(adapter->mac_table[i].addr);
 		}
 
 		igb_rar_set_index(adapter, i);