drivers: usb: fsl: Return if USB_MAX_CONTROLLER_COUNT is incorrect

Return if USB_MAX_CONTROLLER_COUNT hence the index of the controller to be initialised is incorrect

---
Changes for v2
- Added space between tags in Subject
- Replaced return value from -1 to -EINVAL

 drivers/usb/host/ehci-fsl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 5fd618d..97b7f14 100644
@@ -76,7 +76,7 @@ int ehci_hcd_init(int index, enum usb_init_type init,
 		break;
 	default:
 		printf("ERROR: wrong controller index!!\n");
-		break;
+		return -EINVAL;
 	};
 
 	*hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);

1.7.11.7

This text doesn't really make much sense, but the fix is reasonable. I'll pick it, thanks!