ASoC: rt-sdw-common: Enhance switch case to prevent uninitialized variable

If det_mode is not 0, 3 or 5 then function will return
jack_type with an uninitialzed value.
Enhance switch case to prevent uninitialized variable issue.

Signed-off-by: Jack Yu <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/rt-sdw-common.c

···
 		goto io_error;
 
 	switch (det_mode) {
-	case 0x00:
-		jack_type = 0;
-		break;
 	case 0x03:
 		jack_type = SND_JACK_HEADPHONE;
 		break;
 	case 0x05:
 		jack_type = SND_JACK_HEADSET;
+		break;
+	default:
+		jack_type = 0;
 		break;
 	}