ethernet: enic: use eth_hw_addr_set()

Commit 406f42fa ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Use a zero'ed array on the stack, then call eth_hw_addr_set().
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/cisco/enic/enic_main.c

@@ -1098,6 +1098,7 @@ static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 static int enic_set_vf_port(struct net_device *netdev, int vf,
 	struct nlattr *port[])
 {
+	static const u8 zero_addr[ETH_ALEN] = {};
 	struct enic *enic = netdev_priv(netdev);
 	struct enic_port_profile prev_pp;
 	struct enic_port_profile *pp;
@@ -1162,7 +1163,7 @@ static int enic_set_vf_port(struct net_device *netdev, int vf,
 		} else {
 			memset(pp, 0, sizeof(*pp));
 			if (vf == PORT_SELF_VF)
-				eth_zero_addr(netdev->dev_addr);
+				eth_hw_addr_set(netdev, zero_addr);
 		}
 	} else {
 		/* Set flag to indicate that the port assoc/disassoc
@@ -1174,7 +1175,7 @@ static int enic_set_vf_port(struct net_device *netdev, int vf,
 		if (pp->request == PORT_REQUEST_DISASSOCIATE) {
 			eth_zero_addr(pp->mac_addr);
 			if (vf == PORT_SELF_VF)
-				eth_zero_addr(netdev->dev_addr);
+				eth_hw_addr_set(netdev, zero_addr);
 		}
 	}