Revert "drm/xe: flush gtt before signalling user fence on all engines"

This reverts commit 38007fa.

Signaling user-fence after seqno write does not seem to be good solution.
Instead of changing order separate barrier should be put before user-fence,
this will be done in separate patch.

v2: added fixes tag in case reverted patch gets backported to stable

Fixes: 38007fa ("drm/xe: flush gtt before signalling user fence on all engines")
Signed-off-by: Andrzej Hajda <[email protected]>
Reviewed-by: Thomas Hellström <[email protected]>
Signed-off-by: Matthew Brost <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

drivers/gpu/drm/xe/xe_ring_ops.c

@@ -234,13 +234,13 @@ static void __emit_job_gen12_simple(struct xe_sched_job *job, struct xe_lrc *lrc
 
 	i = emit_bb_start(batch_addr, ppgtt_flag, dw, i);
 
-	i = emit_flush_imm_ggtt(xe_lrc_seqno_ggtt_addr(lrc), seqno, false, dw, i);
-
 	if (job->user_fence.used)
 		i = emit_store_imm_ppgtt_posted(job->user_fence.addr,
 						job->user_fence.value,
 						dw, i);
 
+	i = emit_flush_imm_ggtt(xe_lrc_seqno_ggtt_addr(lrc), seqno, false, dw, i);
+
 	i = emit_user_interrupt(dw, i);
 
 	xe_gt_assert(gt, i <= MAX_JOB_SIZE_DW);
@@ -293,13 +293,13 @@ static void __emit_job_gen12_video(struct xe_sched_job *job, struct xe_lrc *lrc,
 
 	i = emit_bb_start(batch_addr, ppgtt_flag, dw, i);
 
-	i = emit_flush_imm_ggtt(xe_lrc_seqno_ggtt_addr(lrc), seqno, false, dw, i);
-
 	if (job->user_fence.used)
 		i = emit_store_imm_ppgtt_posted(job->user_fence.addr,
 						job->user_fence.value,
 						dw, i);
 
+	i = emit_flush_imm_ggtt(xe_lrc_seqno_ggtt_addr(lrc), seqno, false, dw, i);
+
 	i = emit_user_interrupt(dw, i);
 
 	xe_gt_assert(gt, i <= MAX_JOB_SIZE_DW);