ACPI: sysfs: Use ACPI_FREE() for freeing an ACPI object

Since str_obj is allocated by ACPICA in acpi_evaluate_object_typed(),
it should be free with ACPI_FREE() rather than with kfree(), so use
the former instead of the latter for freeing it.

Signed-off-by: Kaushlendra Kumar <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
[ rjw: Subject and changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/device_sysfs.c

···
 
 	buf[result++] = '\n';
 
-	kfree(str_obj);
+	ACPI_FREE(str_obj);
 
 	return result;
 }