scsi: megaraid_sas: Fix crash after a double completion

When a physical disk is attached directly "without JBOD MAP support" (see
megasas_get_tm_devhandle()) then there is no real error handling in the
driver.  Return FAILED instead of SUCCESS.

Fixes: 18365b13

 ("megaraid_sas: Task management support")
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20230324150134.14696-1-thenzl@redhat.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>