ASoC: Show device id in the debug message

Show the id we read when the id mismatch is detected.
This is useful for debugging.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8996.c b/sound/soc/codecs/wm8996.c
index 759ea69..c3bde4a 100644
--- a/sound/soc/codecs/wm8996.c
+++ b/sound/soc/codecs/wm8996.c
@@ -3185,7 +3185,7 @@
 		goto err_regmap;
 	}
 	if (reg != 0x8915) {
-		dev_err(&i2c->dev, "Device is not a WM8996, ID %x\n", ret);
+		dev_err(&i2c->dev, "Device is not a WM8996, ID %x\n", reg);
 		ret = -EINVAL;
 		goto err_regmap;
 	}