graphics: initialize BDA tables before first buffer registration

Co-authored-by: Leandro Bras <shadowgaming.7@gmail.com>

src/graphics/host_gpu/renderer/cache/bufferCache.cpp

@@ -256,6 +256,10 @@ BufferCache::BufferCache(GraphicContext& graphics, CommandScheduler& scheduler,
 	m_gds_buffer.Flush(0, m_gds_buffer.Size());
 	SetVulkanObjectNameF(m_graphics.device, m_bda_pagetable_buffer.Handle(),
 	                     "BDA Page Table Buffer");
+	m_scheduler.BeginCommand();
+	for (auto* buffer: {&m_bda_pagetable_buffer, m_fault_manager.GetFaultBuffer()}) {
+		buffer->Fill(0, buffer->Size(), 0);
+	}
 	const auto null_id =
 	    m_slot_buffers.insert(m_graphics, m_scheduler, MemoryUsage::DeviceLocal, 0, AllFlags, 16);
 	EXIT_IF(null_id != NULL_BUFFER_ID);

src/graphics/host_gpu/renderer/commandScheduler.cpp

@@ -327,7 +327,7 @@ void CommandScheduler::CheckActive() const {
 }
 
 CommandBuffer& CommandScheduler::Current() {
-	CheckActive();
+	EXIT_IF(m_command.IsInvalid());
 	return m_command;
 }