ACPI / processor: Fix thermal cooling device regression

The processor cooling device is no longer present for passive thermal
control.

Commit 239708a3af44 ("ACPI: Split out ACPI PSS from ACPI Processor driver")
moved the processing to a new function acpi_pss_perf_init(), but
missed "return 0" after successful creation.  This causes the error
handling functions to be called, which will delete the previously
created processor cooling device.

Fixes: 239708a3af44 (ACPI: Split out ACPI PSS from ACPI Processor driver)
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: 4.3+ <stable@vger.kernel.org> # 4.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/processor_driver.c

@@ -200,7 +200,8 @@ static int acpi_pss_perf_init(struct acpi_processor *pr,
 		goto err_remove_sysfs_thermal;
 	}
 
-	sysfs_remove_link(&pr->cdev->device.kobj, "device");
+	return 0;
+
  err_remove_sysfs_thermal:
 	sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
  err_thermal_unregister: