ASoC: mediatek: mt8183: delete some unreachable code

This has a goto followed by an unreachable return statement.  The goto
is correct because it cleans up so the current runtime behavior is fine.
Let's delete the unreachable return statement.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/X9NFg3KVm16Gx6Io@mwanda
Signed-off-by: Mark Brown <broonie@kernel.org>