Add in the missing null check for udc->driver that is present at other
points in the function before it is dereferenced.
This issue was found by Smatch.
Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Reviewed-by: Marek Vasut <marek.vasut@mailbox.org>
Link: https://lore.kernel.org/r/20250929-atmel_usba_udc-v1-1-e1426271e12a@linaro.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
f586675872