ASoC: wm9712: fix unused variable warning

The 'ret' variable is now only used in an #ifdef, and causes a
warning if it is declared outside of that block:

sound/soc/codecs/wm9712.c: In function 'wm9712_soc_probe':
sound/soc/codecs/wm9712.c:641:6: error: unused variable 'ret' [-Werror=unused-variable]

Fixes: 2ed1a8e0 ("ASoC: wm9712: add ac97 new bus support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm9712.c

@@ -638,13 +638,14 @@ static int wm9712_soc_probe(struct snd_soc_component *component)
 {
 	struct wm9712_priv *wm9712 = snd_soc_component_get_drvdata(component);
 	struct regmap *regmap;
-	int ret;
 
 	if (wm9712->mfd_pdata) {
 		wm9712->ac97 = wm9712->mfd_pdata->ac97;
 		regmap = wm9712->mfd_pdata->regmap;
 	} else {
 #ifdef CONFIG_SND_SOC_AC97_BUS
+		int ret;
+
 		wm9712->ac97 = snd_soc_new_ac97_component(component, WM9712_VENDOR_ID,
 						      WM9712_VENDOR_ID_MASK);
 		if (IS_ERR(wm9712->ac97)) {