scsi: pm8001: Fix task leak in pm8001_send_abort_all()

scsi: pm8001: Fix task leak in pm8001_send_abort_all()

BugLink: https://bugs.launchpad.net/bugs/1969107
[ Upstream commit f90a74892f3acf0cdec5844e90fc8686ca13e7d7 ]

In pm8001_send_abort_all(), make sure to free the allocated sas task
if pm8001_tag_alloc() or pm8001_mpi_build_cmd() fail.

Link: https://lore.kernel.org/r/20220220031810.738362-21-damien.lemoal@opensource.wdc.com
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 2290dcad6f65864dec518fb2d5fb45f67d684150)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>