ASoC: Intel: cht_bsw_rt5672: fix kernel oops with platform_name override

The platform override code uses devm_ functions to allocate memory for
the new name but the card device is not initialized. Fix by moving the
init earlier.

Fixes: f403906d

 ("ASoC: Intel: cht_bsw_rt5672: platform name fixup support")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>