net: usb: pegasus: fixes of set_register(s) return value evaluation;

- restore the behavior in enable_net_traffic() to avoid regressions - Jakub
    Kicinski;
  - hurried up and removed redundant assignment in pegasus_open() before yet
    another checker complains;

Fixes: 8a160e2 ("net: usb: pegasus: Check the return value of get_geristers() and friends;")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Petko Manolov <petko.manolov@konsulko.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/pegasus.c

@@ -446,7 +446,7 @@ static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
 		write_mii_word(pegasus, 0, 0x1b, &auxmode);
 	}
 
-	return 0;
+	return ret;
 fail:
 	netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 	return ret;
@@ -835,7 +835,7 @@ static int pegasus_open(struct net_device *net)
 	if (!pegasus->rx_skb)
 		goto exit;
 
-	res = set_registers(pegasus, EthID, 6, net->dev_addr);
+	set_registers(pegasus, EthID, 6, net->dev_addr);
 
 	usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 			  usb_rcvbulkpipe(pegasus->usb, 1),