gianfar: fix double lock typo

This should be a _restore() instead of a _save().
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/gianfar_ethtool.c

@@ -538,7 +538,7 @@ static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
 
 		unlock_tx_qs(priv);
 		unlock_rx_qs(priv);
-		local_irq_save(flags);
+		local_irq_restore(flags);
 
 		for (i = 0; i < priv->num_rx_queues; i++)
 			gfar_clean_rx_ring(priv->rx_queue[i],