ASoC: STA529: fix an error message

GCC complains that "ret" is uninitialized here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-By: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/sta529.c

@@ -397,8 +397,9 @@ static __devinit int sta529_i2c_probe(struct i2c_client *i2c,
 
 	sta529->regmap = devm_regmap_init_i2c(i2c, &sta529_regmap);
 	if (IS_ERR(sta529->regmap)) {
+		ret = PTR_ERR(sta529->regmap);
 		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
-		return PTR_ERR(sta529->regmap);
+		return ret;
 	}
 
 	i2c_set_clientdata(i2c, sta529);