net: dsa: b53: VLAN filtering is global to all users

The bcm_sf2 driver uses the b53 driver as a library but does not make
usre of the b53_setup() function, this made it fail to inherit the
vlan_filtering_is_global attribute. Fix this by moving the assignment to
b53_switch_alloc() which is used by bcm_sf2.

Fixes: 7228b23e ("net: dsa: b53: Let DSA handle mismatched VLAN filtering settings")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/b53/b53_common.c

@@ -1105,13 +1105,6 @@ static int b53_setup(struct dsa_switch *ds)
 			b53_disable_port(ds, port);
 	}
 
-	/* Let DSA handle the case were multiple bridges span the same switch
-	 * device and different VLAN awareness settings are requested, which
-	 * would be breaking filtering semantics for any of the other bridge
-	 * devices. (not hardware supported)
-	 */
-	ds->vlan_filtering_is_global = true;
-
 	return b53_setup_devlink_resources(ds);
 }
 
@@ -2664,6 +2657,13 @@ struct b53_device *b53_switch_alloc(struct device *base,
 	ds->ops = &b53_switch_ops;
 	ds->untag_bridge_pvid = true;
 	dev->vlan_enabled = true;
+	/* Let DSA handle the case were multiple bridges span the same switch
+	 * device and different VLAN awareness settings are requested, which
+	 * would be breaking filtering semantics for any of the other bridge
+	 * devices. (not hardware supported)
+	 */
+	ds->vlan_filtering_is_global = true;
+
 	mutex_init(&dev->reg_mutex);
 	mutex_init(&dev->stats_mutex);