ASoC: max98390: Fix error codes in max98390_dsm_init()

These error paths return success but they should return -EINVAL.

Fixes: 97ed3e50 ("ASoC: max98390: Fix potential crash during param fw loading")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/X9B0uz4svyNTqeMb@mwanda


Signed-off-by: Mark Brown <broonie@kernel.org>