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

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

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ST Employee

Hello @Jak

First let me thank you for posting.

Could you provide more details about the project configuration:

KR,
Semer.

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