scsi: qla2xxx: Fix losing target when it reappears during delete

FC target disappeared during port perturbation tests due to a race that
tramples target state.  Fix the issue by adding state checks before
proceeding.

Link: https://lore.kernel.org/r/20220616053508.27186-8-njavali@marvell.com
Fixes: 44c57f20

 ("scsi: qla2xxx: Changes to support FCP2 Target")
Cc: stable@vger.kernel.org
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>