i40e/i40evf: assure clean asq status report

i40e/i40evf: assure clean asq status report

Orabug: 22342532

There was a possibility where the asq_last_status could get through without
update and thus report a previous error.  I don't think we've actually seen
this happen, but this patch will help make sure it doesn't.

Change-ID: I9e33927052a5ee6ea21f80b66d4c4b76c2760b17
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Christopher Pau <christopher.pau@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 9e1c26e35030aa56057a69514acb17da5e81eb16)
Signed-off-by: Brian Maly <brian.maly@oracle.com>