voice: fix setting call audio format

MM should be updating the call audio format and port on ongoing/active
calls, not terminated ones.

Signed-off-by: Dan Williams <dan@ioncontrol.co>

src/mm-iface-modem-voice.c

@@ -2163,8 +2163,7 @@ call_list_foreach_audio_settings (MMBaseCall         *call,
                                   InCallEventContext *ctx)
 {
     if (mm_base_call_get_state (call) != MM_CALL_STATE_TERMINATED)
-        return;
-    mm_base_call_change_audio_settings (call, ctx->audio_port, ctx->audio_format);
+        mm_base_call_change_audio_settings (call, ctx->audio_port, ctx->audio_format);
 }
 
 static void