ASoC: da7219: Improve error handling for regulator supplies

Currently if bulk_enable() of supplies fails, the code still goes on
to try and put the device into active state, and set expected IO
voltage of the device. This doesn't really make sense so code now
returns on bulk_enable() failure, with an error message. Also,
to help with debug, failure to get supplies also provides an error
message.

Signed-off-by: Adam Thomson <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/da7219.c

···
 
 	ret = devm_regulator_bulk_get(codec->dev, DA7219_NUM_SUPPLIES,
 				      da7219->supplies);
-	if (ret)
+	if (ret) {
+		dev_err(codec->dev, "Failed to get supplies");
 		return ret;
+	}
 
 	/* Determine VDDIO voltage provided */
 	vddio = da7219->supplies[DA7219_SUPPLY_VDDIO].consumer;
···
 
 	/* Enable main supplies */
 	ret = regulator_bulk_enable(DA7219_NUM_SUPPLIES, da7219->supplies);
+	if (ret) {
+		dev_err(codec->dev, "Failed to enable supplies");
+		return ret;
+	}
 
 	/* Ensure device in active mode */
 	snd_soc_write(codec, DA7219_SYSTEM_ACTIVE, DA7219_SYSTEM_ACTIVE_MASK);
···
 	/* Update IO voltage level range */
 	snd_soc_write(codec, DA7219_IO_CTRL, io_voltage_lvl);
 
-	return ret;
+	return 0;
 }
 
 static void da7219_handle_pdata(struct snd_soc_codec *codec)