Handle errors of libusb_bulk_transfer()

Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Change-Id: Iad1308e3bc2656506b0f485aecff8328034dc319
Reviewed-on: https://review.coreboot.org/c/em100/+/47731
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed