netdev: Do not use TX lock to protect address lists.

Now that we have a specific lock to protect the network
device unicast and multicast lists, remove extraneous
grabs of the TX lock in cases where the code only needs
address list protection.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index e1257e5..7b2015f 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -696,10 +696,8 @@
 
 	/* Serialise against efx_set_multicast_list() */
 	if (efx_dev_registered(efx)) {
-		netif_tx_lock_bh(efx->net_dev);
-		netif_addr_lock(efx->net_dev);
-		netif_addr_unlock(efx->net_dev);
-		netif_tx_unlock_bh(efx->net_dev);
+		netif_addr_lock_bh(efx->net_dev);
+		netif_addr_unlock_bh(efx->net_dev);
 	}
 }