[media] smiapp: Read frame format earlier

The information gathered during frame format reading will be required
earlier in the initialisation when it was available. Also return an error
if frame format cannot be obtained.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>