When we call hisi_sas_slot_task_free() we should grab theReviewed-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
hisi_hba.lock, as hisi_sas_slot_task_free() accesses common
hisi_hba elements.
Function hisi_sas_slot_abort() is missing this, so add it.
Signed-off-by: John Garry <john.garry@xxxxxxxxxx>