[BUG] STM32 lwIP ethernetif.c incorrect error evaluation in low_level_output()

[Jak]

When HAL_ETH_Transmit_IT() returns an error the errval variable is not changed from ERR_OK to reflect that in the else section.

[Semer CHERNI]

Hello @Jak 

First let me thank you for posting.

Could you provide more details about the project configuration:

• The CubeMX version used
• The used MCU
• If possible the ioc file to be able to reproduce the issue.

KR,
Semer.