ACPICA: Utilities: Fix memory leak in acpi_ut_copy_iobject_to_iobject

commit 8aa5e56e upstream.

Adds return status check on copy routines to delete the allocated destination
object if either copy fails. Reported by Colin Ian King on bugs.acpica.org,
Bug 1087.
The last applicable commit:
 Commit: 3371c19c
 Subject: ACPICA: Remove ACPI_GET_OBJECT_TYPE macro

Link: https://bugs.acpica.org/show_bug.cgi?id=1087Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/acpi/acpica/utcopy.c

@@ -1001,5 +1001,11 @@ acpi_ut_copy_iobject_to_iobject(union acpi_operand_object *source_desc,
 		status = acpi_ut_copy_simple_object(source_desc, *dest_desc);
 	}
 
+	/* Delete the allocated object if copy failed */
+
+	if (ACPI_FAILURE(status)) {
+		acpi_ut_remove_reference(*dest_desc);
+	}
+
 	return_ACPI_STATUS(status);
 }