ALSA: sb_mixer: missing return statement

The if condition here was supposed to return on error but the return
statement is missing.  The effect is that the ->mixername is set to
"???" instead of "DT019X".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/sb/sb_mixer.c

@@ -818,12 +818,14 @@ int snd_sbmixer_new(struct snd_sb *chip)
 			return err;
 		break;
 	case SB_HW_DT019X:
-		if ((err = snd_sbmixer_init(chip,
+		err = snd_sbmixer_init(chip,
 				       snd_dt019x_controls,
 				       ARRAY_SIZE(snd_dt019x_controls),
 				       snd_dt019x_init_values,
 				       ARRAY_SIZE(snd_dt019x_init_values),
-					    "DT019X")) < 0)
+				       "DT019X");
+		if (err < 0)
+			return err;
 		break;
 	default:
 		strcpy(card->mixername, "???");