target: remove the se_task task_error_status field

We only reach transport_complete_task once per task, so the test and set on
task_error_status is never going to have an effect.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_transport.c

@@ -738,13 +738,7 @@ void transport_complete_task(struct se_task *task, int success)
 	}
 
 	if (cmd->t_tasks_failed) {
-		if (!task->task_error_status) {
-			task->task_error_status =
-				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-			cmd->scsi_sense_reason =
-				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-		}
-
+		cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 		INIT_WORK(&cmd->work, target_complete_failure_work);
 	} else {
 		atomic_set(&cmd->t_transport_complete, 1);

include/target/target_core_base.h

@@ -490,7 +490,6 @@ struct se_task {
 	u32			task_sg_nents;
 	u16			task_flags;
 	u8			task_scsi_status;
-	int			task_error_status;
 	enum dma_data_direction	task_data_direction;
 	atomic_t		task_state_active;
 	struct list_head	t_list;