usb: gadget: fsl: Fix a wrong judgment in fsl_udc_probe()

[Markus Elfring]

> Hardware experiments show that the negative return value is not just "-EPROBE_DEFER".

How much will this specific error code influence our understanding
of the discussed software situation?


>>> +        ret = udc_controller->irq ? : -ENODEV;
>> Will it be clearer to specify values for all cases in such a conditional operator
>> (instead of leaving one case empty)?
>
> I don't know what you mean of "instead of leaving one case empty".

I suggest to reconsider also the proposed specification “… ? : …”.

Regards,
Markus