mlxsw: spectrum: Do not return an error in mlxsw_sp_port_module_unmap()

The return value is never checked. Allows us to simplify a later patch.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -551,13 +551,13 @@ mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 }
 
-static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
+static void mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 {
 	char pmlp_pl[MLXSW_REG_PMLP_LEN];
 
 	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
 	mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
-	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
+	mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
 }
 
 static int mlxsw_sp_port_open(struct net_device *dev)