mlxsw: spectrum_router: Allocate FID prior to RIF configuration

The following patches are going to re-arrange the FID and RIF code, so
that when the RIF is configured to the device based on the information
present in the RIF struct (which points to a FID).

For this reason, move the FID allocation to just before the RIF
configuration.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

@@ -3018,26 +3018,26 @@ mlxsw_sp_port_vlan_rif_sp_create(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
 	if (rif_index == MLXSW_SP_INVALID_INDEX_RIF)
 		return ERR_PTR(-ERANGE);
 
+	fid = mlxsw_sp_rif_sp_to_fid(rif_index);
+	f = mlxsw_sp_rfid_alloc(fid, l3_dev);
+	if (!f)
+		return ERR_PTR(-ENOMEM);
+
 	vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN);
-	if (IS_ERR(vr))
-		return ERR_CAST(vr);
+	if (IS_ERR(vr)) {
+		err = PTR_ERR(vr);
+		goto err_vr_get;
+	}
 
 	err = mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp_port_vlan, vr->id, l3_dev,
 					   rif_index, true);
 	if (err)
 		goto err_port_vlan_rif_sp_op;
 
-	fid = mlxsw_sp_rif_sp_to_fid(rif_index);
 	err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true);
 	if (err)
 		goto err_rif_fdb_op;
 
-	f = mlxsw_sp_rfid_alloc(fid, l3_dev);
-	if (!f) {
-		err = -ENOMEM;
-		goto err_rfid_alloc;
-	}
-
 	rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f);
 	if (!rif) {
 		err = -ENOMEM;
@@ -3060,14 +3060,14 @@ mlxsw_sp_port_vlan_rif_sp_create(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
 	return rif;
 
 err_rif_alloc:
-	kfree(f);
-err_rfid_alloc:
 	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
 err_rif_fdb_op:
 	mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp_port_vlan, vr->id, l3_dev,
 				     rif_index, false);
 err_port_vlan_rif_sp_op:
 	mlxsw_sp_vr_put(vr);
+err_vr_get:
+	kfree(f);
 	return ERR_PTR(err);
 }
 
@@ -3094,14 +3094,13 @@ mlxsw_sp_port_vlan_rif_sp_destroy(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
 
 	kfree(rif);
 
-	kfree(f);
-
 	mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
 
 	mlxsw_sp_port_vlan_rif_sp_op(mlxsw_sp_port_vlan, vr->id, l3_dev,
 				     rif_index, false);
 
 	mlxsw_sp_vr_put(vr);
+	kfree(f);
 }
 
 static int