sceAudio: Don't reschedule before the mixed block is pushed

Waking a thread from the mixer reschedules, which runs any due CoreTiming
events. When an audio tick runs late, the next tick would already be due, and
it would mix over mixBuffer before this one had been output. The next block
would then be played twice and this one dropped.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Core/HLE/__sceAudio.cpp

@@ -639,10 +639,6 @@ void __AudioUpdate(bool resetRecording) {
 	woke |= __AudioMixSRC(g_audioSRC);
 	audioMixing = false;
 
-	if (woke) {
-		__AudioReScheduleAfterWake();
-	}
-
 	if (g_Config.bEnableSound) {
 		float multiplier = Volume100ToMultiplier(std::clamp(g_Config.iGameVolume, 0, VOLUMEHI_FULL));
 		if (PSP_CoreParameter().fpsLimit != FPSLimit::NORMAL || PSP_CoreParameter().fastForward) {
@@ -689,6 +685,13 @@ void __AudioUpdate(bool resetRecording) {
 		}
 #endif
 	}
+
+	// Only once the block is out. Rescheduling runs any due events, and when this tick was late
+	// that includes the next one, which would mix over mixBuffer before it was pushed - playing
+	// the next block twice and dropping this one.
+	if (woke) {
+		__AudioReScheduleAfterWake();
+	}
 }
 
 #ifndef MOBILE_DEVICE