ASoC: cs35l41: Always return 0 when a subsystem ID is found

When trying to get the system name in the _HID path, after successfully
retrieving the subsystem ID the return value isn't set to 0 but instead
still kept at -ENODATA, leading to a false negative:

[   12.382507] cs35l41 spi-VLV1776:00: Subsystem ID: VLV1776
[   12.382521] cs35l41 spi-VLV1776:00: probe with driver cs35l41 failed with error -61

Always return 0 when a subsystem ID is found to mitigate these false
negatives.

Link: CachyOS/CachyOS-Handheld#83
Fixes: 46c8b4d ("ASoC: cs35l41: Fallback to reading Subsystem ID property if not ACPI")
Cc: stable@vger.kernel.org # 6.18
Signed-off-by: Eric Naim <dnaim@cachyos.org>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20251206193813.56955-1-dnaim@cachyos.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: 1Naim

sound/soc/codecs/cs35l41.c

@@ -1188,13 +1188,14 @@ static int cs35l41_get_system_name(struct cs35l41_private *cs35l41)
 		}
 	}
 
-err:
 	if (sub) {
 		cs35l41->dsp.system_name = sub;
 		dev_info(cs35l41->dev, "Subsystem ID: %s\n", cs35l41->dsp.system_name);
-	} else
-		dev_warn(cs35l41->dev, "Subsystem ID not found\n");
+		return 0;
+	}
 
+err:
+	dev_warn(cs35l41->dev, "Subsystem ID not found\n");
 	return ret;
 }