Cleanly detach em100 in case of error

Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Change-Id: Ibaeefaa9da257dfb3a89275146b40fd0713fa033
Reviewed-on: https://review.coreboot.org/c/em100/+/47845
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed