mlxsw: spectrum_router: Mark only first LPM tree as reserved

In new firmware versions (that we can now enforce via
request_firmware()), only the first LPM tree is reserved and not the
first two as in older versions.
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

@@ -591,7 +591,7 @@ static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp,
 	return 0;
 }
 
-#define MLXSW_SP_LPM_TREE_MIN 2 /* trees 0 and 1 are reserved */
+#define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */
 
 static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp)
 {