[PATCH v4 3/3] mtd: nand: vf610: check mtd_device_register() return code

[Alexey Khoroshilov]

vf610_nfc_probe() misses error handling of mtd_device_register().

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

Signed-off-by: Alexey Khoroshilov <khoroshilov at ispras.ru>
---
 drivers/mtd/nand/vf610_nfc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c
index 9cc5992e88c8..64fed3d9e3d4 100644
--- a/drivers/mtd/nand/vf610_nfc.c
+++ b/drivers/mtd/nand/vf610_nfc.c
@@ -782,8 +782,13 @@ static int vf610_nfc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, mtd);
 
 	/* Register device in MTD */
-	return mtd_device_register(mtd, NULL, 0);
+	err = mtd_device_register(mtd, NULL, 0);
+	if (err)
+		goto err_cleanup_nand;
+	return 0;
 
+err_cleanup_nand:
+	nand_cleanup(chip);
 err_disable_clk:
 	clk_disable_unprepare(nfc->clk);
 	return err;
-- 
2.7.4