From b0b38a1c6684b10dd0462bef4fef038917115012 Mon Sep 17 00:00:00 2001
From: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Date: Wed, 8 Nov 2017 10:49:56 -0500
Subject: [PATCH] net: dsa: return after mdb prepare phase

The current code does not return after successfully preparing the MDB
addition on every ports member of a multicast group. Fix this.

Fixes: a1a6b7ea7f2d ("net: dsa: add cross-chip multicast support")
Reported-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/dsa/switch.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index e6c06aa349a6..73746fa148f1 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -133,6 +133,8 @@ static int dsa_switch_mdb_add(struct dsa_switch *ds,
 			if (err)
 				return err;
 		}
+
+		return 0;
 	}
 
 	for_each_set_bit(port, group, ds->num_ports)