[PATCH 1/1] starfive: fix return code of `mac write_eeprom`

[Hal Feng]

> On 09.08.25 16:22, Heinrich Schuchardt wrote:
> 
> When writing the EEPROM fails, the command usage help text is displayed
> after the error message. We should only display the error message instead.
> 
> If writing the EEPROM fails, return CMD_RET_FAILURE (1) instead of
> CMD_RET_USAGE (-1).
> 
> Fixes: aea1bd95b61e ("eeprom: starfive: Enable ID EEPROM configuration")
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>

Reviewed-by: Hal Feng <hal.feng at starfivetech.com>