net: usb: asix88179_178a: set permanent address once only

The permanent address of asix88179_178a devices is read at probe time
and should not be overwritten later. Otherwise it may be overwritten
unintentionally with a configured address.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/ax88179_178a.c

@@ -1556,7 +1556,6 @@ static int ax88179_reset(struct usbnet *dev)
 
 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
 			 dev->net->dev_addr);
-	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
 
 	/* RX bulk configuration */
 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);