ASoC: kirkwood: fix external clock probe defer

When our call to get the external clock fails, we forget to clean up
the enabled internal clock correctly.  Enable the clock after we have
obtained all our resources.

Fixes: 84aac6c7

 ("ASoC: kirkwood: fix loss of external clock at probe time")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1iNGyK-0004oF-6A@rmk-PC.armlinux.org.uk


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