8139cp: Call __cp_set_rx_mode() from cp_tx_timeout()

Unless we reset the RX config, on real hardware I don't seem to receive
any packets after a TX timeout.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/8139cp.c

@@ -1261,6 +1261,7 @@ static void cp_tx_timeout(struct net_device *dev)
 	cp_clean_rings(cp);
 	rc = cp_init_rings(cp);
 	cp_start_hw(cp);
+	__cp_set_rx_mode(dev);
 	cp_enable_irq(cp);
 
 	netif_wake_queue(dev);