acer-wmi: fix memory leaks in wmab_execute error path

When acpi_evaluate_object() is passed ACPI_ALLOCATE_BUFFER, the caller
must kfree the returned buffer if AE_OK is returned.

Call Trace:
wmab_execute
  -> wmi_evaluate_method
    -> acpi_evaluate_object

Thus if callers of wmab_execute() pass ACPI_ALLOCATE_BUFFER, the return
buffer must be kfreed if wmab_execute return AE_OK.

[[email protected]: avoid multiple return points, remove unneeded cast, remove unneeded initialisation of `status']
Signed-off-by: Axel Lin <[email protected]>
Acked-by: Carlos Corbacho <[email protected]>
Cc: Matthew Garrett <[email protected]>
Cc: Thomas Renninger <[email protected]>
Cc: Alan Jenkins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Matthew Garrett <[email protected]>

0 files changed, 0 insertions, 0 deletions