net: call dev_alloc_name from register_netdevice

Force dev_alloc_name() to be called from register_netdevice() by
dev_get_valid_name(). That allows to remove multiple explicit
dev_alloc_name() calls.

The possibility to call dev_alloc_name in advance remains.

This also fixes veth creation regresion caused by
84c49d8c3e4abefb0a41a77b25aa37ebe8d6b743

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index f4f4257..9d4a40e 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1515,19 +1515,10 @@
 	if (hwsim_mon == NULL)
 		goto failed;
 
-	rtnl_lock();
-
-	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
+	err = register_netdev(hwsim_mon);
 	if (err < 0)
 		goto failed_mon;
 
-
-	err = register_netdevice(hwsim_mon);
-	if (err < 0)
-		goto failed_mon;
-
-	rtnl_unlock();
-
 	return 0;
 
 failed_mon: