team: Add matching error label for failed action

Follow the "action" - "err_action" pairing of labels
found across the source code of team net device.

Currently in team_port_add the err_set_slave_promisc
label is reused for exiting on error when setting
allmulti level of the new slave.

Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20251128072544.223645-1-zlatistiv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: zlatistiv

drivers/net/team/team_core.c

@@ -1231,7 +1231,7 @@ static int team_port_add(struct team *team, struct net_device *port_dev,
 		if (err) {
 			if (dev->flags & IFF_PROMISC)
 				dev_set_promiscuity(port_dev, -1);
-			goto err_set_slave_promisc;
+			goto err_set_slave_allmulti;
 		}
 	}
 
@@ -1258,6 +1258,7 @@ static int team_port_add(struct team *team, struct net_device *port_dev,
 	return 0;
 
 err_set_dev_type:
+err_set_slave_allmulti:
 err_set_slave_promisc:
 	__team_option_inst_del_port(team, port);