octeon_mgmt: drop redundant mac address check

Checking if MAC address is valid using is_valid_ether_addr() is already done in
of_get_mac_address().
Signed-off-by: NLuka Perkov <luka@openwrt.org>
Acked-by: NDavid Daney <david.daney@cavium.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/octeon/octeon_mgmt.c

@@ -1545,7 +1545,7 @@ static int octeon_mgmt_probe(struct platform_device *pdev)
 
 	mac = of_get_mac_address(pdev->dev.of_node);
 
-	if (mac && is_valid_ether_addr(mac))
+	if (mac)
 		memcpy(netdev->dev_addr, mac, ETH_ALEN);
 	else
 		eth_hw_addr_random(netdev);