The only way this driver can be probed is via devicetree, which always
provides driver data.

Remove the unneeded of_device_get_match_data() error check, as it
can never fail.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210118123815.1630882-6-festevam@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>