Revert "usb: host: ehci-sh: propagate errors from platform_get_irq()"

This reverts commit 1aebf115afd730d1e0f773b8273b04b8681e1128 as the
prerequsite commit for it is not in the tree.

Cc: Alan Stern <[e-mail]>
Reported-by: Sergey Shtylyov <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/host/ehci-sh.c

···
 		return -ENODEV;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = irq;
+	if (irq <= 0) {
+		ret = -ENODEV;
 		goto fail_create_hcd;
 	}