scsi: qla2xxx: Fix memory leak in __qlt_24xx_handle_abts()

[ Upstream commit 601be20f ]

Commit 8f394da3 ("scsi: qla2xxx: Drop TARGET_SCF_LOOKUP_LUN_FROM_TAG")
made the __qlt_24xx_handle_abts() function return early if
tcm_qla2xxx_find_cmd_by_tag() didn't find a command, but it missed to clean
up the allocated memory for the management command.

Link: https://lore.kernel.org/r/20220914024924.695604-1-rafaelmendsr@gmail.com
Fixes: 8f394da3

 ("scsi: qla2xxx: Drop TARGET_SCF_LOOKUP_LUN_FROM_TAG")
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>