Change in flashrom[master]: realtek_mst_i2c_spi: don't always fail init

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: Paul Menzel, Angel Pons, Peter Marheine.
Anastasia Klimchuk has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/56799 )

Change subject: realtek_mst_i2c_spi: don't always fail init
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
I got confused at first because even initial version of this file has `int ret = SPI_GENERIC_ERROR;`, so this line has always been here. But then I looked closely, the structure of get_params has changed at some point. Previously ret was assigned `ret = 0` in successful case(s), so it was working. And then at some point `ret = 0` was lost.

Peter thank you for fixing this! I assume you tested on the device? Could you please add TEST info to commit message?