[PATCH v2] spi: mtk-snfi: fix memory leak in probe

[Felix Gu <ustc.gu@gmail.com>]

ms->buf is allocated in mtk_snand_setup_pagefmt() but was not freed on
the following error paths.

Fixes: 2b1e19811a8e ("spi: mtk-snfi: Change default page format to setup default setting")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
Changes in v2:
- Fix Mark's comment.
- Link to v1: https://lore.kernel.org/r/20260416-mtk-snfi-v1-1-fafccfd288f9@gmail.com
---
 drivers/spi/spi-mtk-snfi.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-mtk-snfi.c b/drivers/spi/spi-mtk-snfi.c
index 73fa84475f0e..e616e6800e92 100644
--- a/drivers/spi/spi-mtk-snfi.c
+++ b/drivers/spi/spi-mtk-snfi.c
@@ -1447,14 +1447,14 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	ret = nand_ecc_register_on_host_hw_engine(&ms->ecc_eng);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register ecc engine.\n");
-		goto release_ecc;
+		goto free_buf;
 	}
 
 	ret = devm_add_action_or_reset(&pdev->dev, mtk_unregister_ecc_engine,
 				       &ms->ecc_eng);
 	if (ret) {
 		dev_err_probe(&pdev->dev, ret, "failed to add ECC unregister action\n");
-		goto release_ecc;
+		goto free_buf;
 	}
 
 	ctlr->num_chipselect = 1;
@@ -1465,10 +1465,12 @@ static int mtk_snand_probe(struct platform_device *pdev)
 	ret = spi_register_controller(ctlr);
 	if (ret) {
 		dev_err(&pdev->dev, "spi_register_controller failed.\n");
-		goto release_ecc;
+		goto free_buf;
 	}
 
 	return 0;
+free_buf:
+	kfree(ms->buf);
 release_ecc:
 	mtk_ecc_release(ms->ecc);
 	return ret;

---
base-commit: 936c21068d7ade00325e40d82bfd2f3f29d9f659
change-id: 20260415-mtk-snfi-651a984002ba

Best regards,
-- 
Felix Gu <ustc.gu@gmail.com>