drm/lima: fix sched context destroy

The drm sched entity must be flushed before finishing, to account for
jobs potentially still in flight at that time.
Lima did not do this flush until now, so switch the destroy call to the
drm_sched_entity_destroy() wrapper which will take care of that.

This fixes a regression on lima which started since the rework in
commit 2fdb8a8 ("drm/scheduler: rework entity flush, kill and fini")
where some specific types of applications may hang indefinitely.

Fixes: 2fdb8a8 ("drm/scheduler: rework entity flush, kill and fini")
Reviewed-by: Vasily Khoruzhick <[email protected]>
Signed-off-by: Erico Nunes <[email protected]>
Signed-off-by: Qiang Yu <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: enunes

drivers/gpu/drm/lima/lima_sched.c

@@ -165,7 +165,7 @@ int lima_sched_context_init(struct lima_sched_pipe *pipe,
 void lima_sched_context_fini(struct lima_sched_pipe *pipe,
 			     struct lima_sched_context *context)
 {
-	drm_sched_entity_fini(&context->base);
+	drm_sched_entity_destroy(&context->base);
 }
 
 struct dma_fence *lima_sched_context_queue_task(struct lima_sched_task *task)