pinctrl: microchip-mssio: Fix missing return in probe

[ Upstream commit 8f72335 ]

In mpfs_pinctrl_probe(), when pctrl->regmap fails, it just print out an
error message without return, which could lead serious errors.

Fixes: 488d704 ("pinctrl: add polarfire soc mssio pinctrl driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: outman119

drivers/pinctrl/microchip/pinctrl-mpfs-mssio.c

@@ -686,7 +686,7 @@ static int mpfs_pinctrl_probe(struct platform_device *pdev)
 
 	pctrl->regmap = device_node_to_regmap(pdev->dev.parent->of_node);
 	if (IS_ERR(pctrl->regmap))
-		dev_err_probe(dev, PTR_ERR(pctrl->regmap), "Failed to find syscon regmap\n");
+		return dev_err_probe(dev, PTR_ERR(pctrl->regmap), "Failed to find syscon regmap\n");
 
 	pctrl->sysreg_regmap = syscon_regmap_lookup_by_compatible("microchip,mpfs-sysreg-scb");
 	if (IS_ERR(pctrl->sysreg_regmap))