scsi: hisi_sas: avoid potential v2 hw interrupt issue

scsi: hisi_sas: avoid potential v2 hw interrupt issue

BugLink: https://bugs.launchpad.net/bugs/1739807
When some interrupts happen together, we need to process every interrupt
one-by-one, and should not return immediately when one interrupt process
is finished being processed.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit c16db736653f5319d1d9b0d176f1f80394bd2614)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Paolo Pisati <paolo.pisati@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>