bus: fsl-mc: add back accidentally dropped error check

A previous patch accidentally dropped an error check, so add it back.

Fixes: aef85b56c3c1 ("bus: fsl-mc: MC control registers are not always available")
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Link: https://lore.kernel.org/r/20201105153050.19662-1-laurentiu.tudor@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index 76a6ee5..806766b 100644 (file)
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -967,8 +967,11 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, mc);
 
        plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-       if (plat_res)
+       if (plat_res) {
                mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res);
+               if (IS_ERR(mc->fsl_mc_regs))
+                       return PTR_ERR(mc->fsl_mc_regs);
+       }
 
        if (mc->fsl_mc_regs && IS_ENABLED(CONFIG_ACPI) &&
            !dev_of_node(&pdev->dev)) {