ASoC: rt5645: fix error handling for gpio detection

Optional gpio handling should not cause an error status and prevent
probing if it's missing.  Remove error return for -ENOENT case and
move error message to dev_info

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5645.c

@@ -3658,8 +3658,14 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
 						       GPIOD_IN);
 
 	if (IS_ERR(rt5645->gpiod_hp_det)) {
-		dev_err(&i2c->dev, "failed to initialize gpiod\n");
+		dev_info(&i2c->dev, "failed to initialize gpiod\n");
-		return PTR_ERR(rt5645->gpiod_hp_det);
+		ret = PTR_ERR(rt5645->gpiod_hp_det);
+		/*
+		 * Continue if optional gpiod is missing, bail for all other
+		 * errors, including -EPROBE_DEFER
+		 */
+		if (ret != -ENOENT)
+			return ret;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(rt5645->supplies); i++)