[PATCH] Revert "ASoC: SOF: icp3-dtrace: Fix wrong kfree() usage"

[Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>]

This reverts commit 8c91ca76f44804868d12aed20ebdbc2f89aa7d60.

The offending patch introduces memory leak when there is no error, the
memory allocated for the temporary storage is not freed up.

As I have commented, the original code was correct and cleaner to
follow but it was not obvious from the patch that it will introduce
regression.

Link: https://lore.kernel.org/all/aec61f67-6b4f-49e6-b458-c332983a0ad6@xxxxxxxxxxxxxxx/
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
---
 sound/soc/sof/ipc3-dtrace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/sof/ipc3-dtrace.c b/sound/soc/sof/ipc3-dtrace.c
index 93b189c2d2ee..0dca139322f3 100644
--- a/sound/soc/sof/ipc3-dtrace.c
+++ b/sound/soc/sof/ipc3-dtrace.c
@@ -137,7 +137,6 @@ static int trace_filter_parse(struct snd_sof_dev *sdev, char *string,
 			dev_err(sdev->dev,
 				"Parsing filter entry '%s' failed with %d\n",
 				entry, entry_len);
-			kfree(*out);
 			return -EINVAL;
 		}
 	}
@@ -209,13 +208,13 @@ static ssize_t dfsentry_trace_filter_write(struct file *file, const char __user
 		ret = ipc3_trace_update_filter(sdev, num_elems, elems);
 		if (ret < 0) {
 			dev_err(sdev->dev, "Filter update failed: %d\n", ret);
-			kfree(elems);
 			goto error;
 		}
 	}
 	ret = count;
 error:
 	kfree(string);
+	kfree(elems);
 	return ret;
 }
 
-- 
2.43.0