Description: scsi: mpt3sas_ctl: fix double-fetch bug in _ctl_ioctl_main()
References:
 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=5.3/scsi-queue&id=86e5aca7fa2927060839f3e3b40c8bd65a7e8d1e
 https://lkml.org/lkml/2019/5/29/1164
Notes:
 bwh> The double-fetched value is not used after the second fetch
Bugs:
upstream: ignored "Invalid issue"
4.19-upstream-stable: ignored "Invalid issue"
4.9-upstream-stable: ignored "Invalid issue"
3.16-upstream-stable: ignored "Invalid issue"
sid: ignored "Invalid issue"
4.19-buster-security: ignored "Invalid issue"
4.9-stretch-security: ignored "Invalid issue"
3.16-jessie-security: ignored "Invalid issue"