usb: host: tegra: remove pointless NULL check in tegra_ehci_remove()

Test for tegra and hcd in tegra_ehci_remove() look like potential
NULL pointer dereference, but in fact those tests are not needed,
so remove these pointless tests entirely.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-tegra.c

@@ -775,9 +775,6 @@ static int tegra_ehci_remove(struct platform_device *pdev)
 	struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev);
 	struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci);
 
-	if (tegra == NULL || hcd == NULL)
-		return -EINVAL;
-
 	pm_runtime_get_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);