ALSA: line6: Cleanup podhd initialization

Only initialize PCM for POD HD devices that support it.
No POD HD seems to support MIDI, thus drop the initialization.
Signed-off-by: Andrej Krutak <dev@andree.sk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/line6/podhd.c

@@ -314,17 +314,14 @@ static int podhd_init(struct usb_line6 *line6,
 			return err;
 	}
 
-	/* initialize MIDI subsystem: */
-	err = line6_init_midi(line6);
-	if (err < 0)
-		return err;
-
-	/* initialize PCM subsystem: */
-	err = line6_init_pcm(line6,
-		(id->driver_info == LINE6_PODX3) ? &podx3_pcm_properties :
-		&podhd_pcm_properties);
-	if (err < 0)
-		return err;
+	if (pod->line6.properties->capabilities & LINE6_CAP_PCM) {
+		/* initialize PCM subsystem: */
+		err = line6_init_pcm(line6,
+			(id->driver_info == LINE6_PODX3) ? &podx3_pcm_properties :
+			&podhd_pcm_properties);
+		if (err < 0)
+			return err;
+	}
 
 	if (!(pod->line6.properties->capabilities & LINE6_CAP_CONTROL)) {
 		/* register USB audio system directly */