Revert "audio/mux: Fix crash on misconfiguration"

This was only a partial workaround.  The root cause is that the sink
(in a different pipeline) really is off, and it needs to be turned on
somehow.

This reverts commit 8656119.

src/audio/mux/mux.c

@@ -473,23 +473,18 @@ static int demux_process(struct processing_module *mod,
 	list_for_item(clist, &dev->bsink_list) {
 		sink = container_of(clist, struct comp_buffer, source_list);
 		sink_c = buffer_acquire(sink);
+		if (sink_c->sink->state == dev->state) {
+			i = get_stream_index(dev, cd, sink_c->pipeline_id);
+			/* return if index wrong */
+			if (i < 0) {
+				buffer_release(sink_c);
+				return i;
+			}
 
-		if (sink_c->sink->state != dev->state) {
-			comp_err(dev, "demux_process(): stream %d sink state %d does not match dev state %d",
-				 i, sink_c->sink->state, dev->state);
-			return -1;
-		}
-
-		i = get_stream_index(dev, cd, sink_c->pipeline_id);
-		/* return if index wrong */
-		if (i < 0) {
-			buffer_release(sink_c);
-			return i;
+			look_ups[i] = get_lookup_table(dev, cd, sink_c->pipeline_id);
+			sinks_stream[i] = &sink_c->stream;
 		}
 
-		look_ups[i] = get_lookup_table(dev, cd, sink_c->pipeline_id);
-		sinks_stream[i] = &sink_c->stream;
-
 		buffer_release(sink_c);
 	}