can: tcan4x5x: tcan4x5x_can_probe(): add missing error checking for devm_regmap_init()

[ Upstream commit 1ff203badbbf1738027c8395d5b40b0d462b6e4d ]

This patch adds the missing error checking when initializing the regmap
interface fails.

Fixes: 5443c226ba91 ("can: tcan4x5x: Add tcan4x5x driver to the kernel")
Cc: Dan Murphy <dmurphy@ti.com>
Link: http://lore.kernel.org/r/20201019154233.1262589-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/can/m_can/tcan4x5x.c b/drivers/net/can/m_can/tcan4x5x.c
index eacd428e07e9f32c9c014b877d0d0105d8b4ffc9..f058bd9104e99f86d2cbfaae4f718672bf35655b 100644 (file)
--- a/drivers/net/can/m_can/tcan4x5x.c
+++ b/drivers/net/can/m_can/tcan4x5x.c
@@ -487,6 +487,10 @@ static int tcan4x5x_can_probe(struct spi_device *spi)
 
        priv->regmap = devm_regmap_init(&spi->dev, &tcan4x5x_bus,
                                        &spi->dev, &tcan4x5x_regmap);
+       if (IS_ERR(priv->regmap)) {
+               ret = PTR_ERR(priv->regmap);
+               goto out_clk;
+       }
 
        ret = tcan4x5x_power_enable(priv->power, 1);
        if (ret)