When call function devm_platform_ioremap_resource(), we should use IS_ERR()
to check the return value and return PTR_ERR() if failed.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
        u32 id, rev;
 
        addr = devm_platform_ioremap_resource(pdev, 0);
+       if (IS_ERR(addr))
+               return PTR_ERR(addr);
+
        irq = platform_get_irq(pdev, 0);
-       if (IS_ERR(addr) || irq < 0)
+       if (irq < 0)
                return -EINVAL;
 
        id = readl(addr + IFI_CANFD_IP_ID);
 
 
        addr = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(addr)) {
-               err = -EBUSY;
+               err = PTR_ERR(addr);
                goto exit;
        }
 
 
 
        priv->regs = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(priv->regs))
-               return -ENOMEM;
+               return PTR_ERR(priv->regs);
 
        dev = b53_switch_alloc(&pdev->dev, &b53_srab_ops, priv);
        if (!dev)
 
 
        pep->base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(pep->base)) {
-               err = -ENOMEM;
+               err = PTR_ERR(pep->base);
                goto err_netdev;
        }