can: ti_hecc: Fix memleak in ti_hecc_probe

[ Upstream commit 7968c7c79d3be8987feb8021f0c46e6866831408 ]

In the error handling, we should goto the probe_exit_candev
to free ndev to prevent memory leak.

Fixes: dabf54dd1c63 ("can: ti_hecc: Convert TI HECC driver to DT only driver")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201114111708.3465543-1-zhangqilong3@huawei.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index db6ea936dc3fc3fca00c939b2db6a938cf5011dc..81a3fdd5e0103634bc064b3ad5d279e595690deb 100644 (file)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -903,7 +903,8 @@ static int ti_hecc_probe(struct platform_device *pdev)
        priv->base = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(priv->base)) {
                dev_err(&pdev->dev, "hecc ioremap failed\n");
-               return PTR_ERR(priv->base);
+               err = PTR_ERR(priv->base);
+               goto probe_exit_candev;
        }
 
        /* handle hecc-ram memory */
@@ -916,7 +917,8 @@ static int ti_hecc_probe(struct platform_device *pdev)
        priv->hecc_ram = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(priv->hecc_ram)) {
                dev_err(&pdev->dev, "hecc-ram ioremap failed\n");
-               return PTR_ERR(priv->hecc_ram);
+               err = PTR_ERR(priv->hecc_ram);
+               goto probe_exit_candev;
        }
 
        /* handle mbx memory */
@@ -929,13 +931,14 @@ static int ti_hecc_probe(struct platform_device *pdev)
        priv->mbx = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(priv->mbx)) {
                dev_err(&pdev->dev, "mbx ioremap failed\n");
-               return PTR_ERR(priv->mbx);
+               err = PTR_ERR(priv->mbx);
+               goto probe_exit_candev;
        }
 
        irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
        if (!irq) {
                dev_err(&pdev->dev, "No irq resource\n");
-               goto probe_exit;
+               goto probe_exit_candev;
        }
 
        priv->ndev = ndev;
@@ -988,7 +991,7 @@ probe_exit_clk:
        clk_put(priv->clk);
 probe_exit_candev:
        free_candev(ndev);
-probe_exit:
+
        return err;
 }