drm/etnaviv: free events the usual way in recover worker

Clearing the whole bitmap at once is only a minor optimization in
a path that should be extremely cold. Free the events by calling
event_free() instead of directly manipulating the completion count
and event bitmap.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>

drivers/gpu/drm/etnaviv/etnaviv_gpu.c

@@ -1450,8 +1450,7 @@ void etnaviv_gpu_recover_hang(struct etnaviv_gem_submit *submit)
 	/* complete all events, the GPU won't do it after the reset */
 	spin_lock(&gpu->event_spinlock);
 	for_each_set_bit(i, gpu->event_bitmap, ETNA_NR_EVENTS)
-		complete(&gpu->event_free);
-	bitmap_zero(gpu->event_bitmap, ETNA_NR_EVENTS);
+		event_free(gpu, i);
 	spin_unlock(&gpu->event_spinlock);
 
 	etnaviv_gpu_hw_init(gpu);