Revert "drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits"

This reverts commit a10195bb.

This commit needs some more thought, and is currently crashing kms_flip
tests. Until we figure out what's going wrong it's better to revert, and
also next time apply it to drm-misc-fixes.

Testcase: kms_flip
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104566
References: https://patchwork.freedesktop.org/series/36185/
References: https://patchwork.freedesktop.org/series/36250/Reported-by: NMarta Löfstedt <marta.lofstedt@intel.com>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>

drivers/gpu/drm/drm_atomic_helper.c

@@ -3421,15 +3421,6 @@ EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state);
 void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state)
 {
 	if (state->commit) {
-		/*
-		 * In the event that a non-blocking commit returns
-		 * -ERESTARTSYS before the commit_tail work is queued, we will
-		 * have an extra reference to the commit object. Release it, if
-		 * the event has not been consumed by the worker.
-		 */
-		if (state->event)
-			drm_crtc_commit_put(state->commit);
-
 		kfree(state->commit->event);
 		state->commit->event = NULL;
 		drm_crtc_commit_put(state->commit);