mlxsw: spectrum_router: simplify the return expression of __mlxsw_sp_router_init()

Simplify the return expression.
Signed-off-by: NQinglang Miao <miaoqinglang@huawei.com>
Reviewed-by: NIdo Schimmel <idosch@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -8033,7 +8033,6 @@ static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
 	bool usp = net->ipv4.sysctl_ip_fwd_update_priority;
 	char rgcr_pl[MLXSW_REG_RGCR_LEN];
 	u64 max_rifs;
-	int err;
 
 	if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS))
 		return -EIO;
@@ -8042,10 +8041,7 @@ static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
 	mlxsw_reg_rgcr_pack(rgcr_pl, true, true);
 	mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs);
 	mlxsw_reg_rgcr_usp_set(rgcr_pl, usp);
-	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
-	if (err)
-		return err;
-	return 0;
+	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
 }
 
 static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)