mtd: rawnand: vf610: disable clk on error handling path in probe

[ Upstream commit cb7dc3178a9862614b1e7567d77f4679f027a074 ]

vf610_nfc_probe() does not invoke clk_disable_unprepare() on one error
handling path. The patch fixes that.

Found by Linux Driver Verification project (linuxtesting.org).

Fixes: 6f0ce4dfc5a3 ("mtd: rawnand: vf610: Avoid a potential NULL pointer dereference")
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200806072634.23528-1-novikov@ispras.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c
index 7248c590118367ad8cdac6f0cf4078770277bce8..fcca45e2abe203163e139ccc76e1475e2f546bb4 100644 (file)
--- a/drivers/mtd/nand/raw/vf610_nfc.c
+++ b/drivers/mtd/nand/raw/vf610_nfc.c
@@ -852,8 +852,10 @@ static int vf610_nfc_probe(struct platform_device *pdev)
        }
 
        of_id = of_match_device(vf610_nfc_dt_ids, &pdev->dev);
-       if (!of_id)
-               return -ENODEV;
+       if (!of_id) {
+               err = -ENODEV;
+               goto err_disable_clk;
+       }
 
        nfc->variant = (enum vf610_nfc_variant)of_id->data;