ACPICA: _OSI support: Fix possible memory leak

Fixes a possible memory leak in the error exit path introduced by
recent commit 388a990 ("ACPICA: _OSI Support: handle any errors from
acpi_os_acquire_mutex()").

[rjw: Changelog]
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index b15acebb96a1..7e807725c636 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -349,7 +349,8 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
         return_value = 0;
         status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
         if (ACPI_FAILURE(status)) {
-                return (status);
+                acpi_ut_remove_reference(return_desc);
+                return_ACPI_STATUS(status);
         }
 
         /* Lookup the interface in the global _OSI list */