scsi: hisi_sas: Fix normally completed I/O analysed as failed

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7GS2V


CVE: NA

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pio read command has no response frame and the struct iu[1024] won't be
filled, and it's found that I/Os that are normally completed will be
analysed as failed in sas_ata_task_done() when iu contain abnormal dirty
data. So ending_fis should not be filled by iu when the response frame
hasn't been written to the memory.

Fixes: d380f555 ("scsi: hisi_sas: Don't bother clearing status buffer IU in task prep")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Reviewed-by: kang fenglong <kangfenglong@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>