mlxsw: core_thermal: Remove another unnecessary check

mlxsw_thermal_modules_init() allocates an array of modules and then
initializes each entry by calling mlxsw_thermal_module_init() which
among other things initializes the 'parent' pointer of the entry.

mlxsw_thermal_modules_init() then traverses over the array again, but
skips over entries that do not have their 'parent' pointer set which is
impossible given the above.

Therefore, remove the unnecessary check.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Link: https://patch.msgid.link/fb3e8ded422a441436431d5785b900f11ffc9621.1722345311.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -505,8 +505,6 @@ mlxsw_thermal_modules_init(struct device *dev, struct mlxsw_core *core,
 
 	for (i = 0; i < area->tz_module_num; i++) {
 		module_tz = &area->tz_module_arr[i];
-		if (!module_tz->parent)
-			continue;
 		err = mlxsw_thermal_module_tz_init(module_tz);
 		if (err)
 			goto err_thermal_module_tz_init;