usb: xhci: tegra: Fix error check

In the function tegra_xusb_powerdomain_init(),
dev_pm_domain_attach_by_name() may return NULL in some cases,
so IS_ERR() doesn't meet the requirements. Thus fix it.

Fixes: 6494a9ad86de ("usb: xhci: tegra: Add genpd support")
Signed-off-by: Tang Bin <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/host/xhci-tegra.c

···
 	int err;
 
 	tegra->genpd_dev_host = dev_pm_domain_attach_by_name(dev, "xusb_host");
-	if (IS_ERR(tegra->genpd_dev_host)) {
-		err = PTR_ERR(tegra->genpd_dev_host);
+	if (IS_ERR_OR_NULL(tegra->genpd_dev_host)) {
+		err = PTR_ERR(tegra->genpd_dev_host) ? : -ENODATA;
 		dev_err(dev, "failed to get host pm-domain: %d\n", err);
 		return err;
 	}
 
 	tegra->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "xusb_ss");
-	if (IS_ERR(tegra->genpd_dev_ss)) {
-		err = PTR_ERR(tegra->genpd_dev_ss);
+	if (IS_ERR_OR_NULL(tegra->genpd_dev_ss)) {
+		err = PTR_ERR(tegra->genpd_dev_ss) ? : -ENODATA;
 		dev_err(dev, "failed to get superspeed pm-domain: %d\n", err);
 		return err;
 	}