Incrementation of avail_clk_cnt was incorrectly moved to error path. Put
it back to success path.

Fixes: 6ee927f2 ('ASoC: Intel: Skylake: Fix NULL ptr dereference when unloading clk dev')
Signed-off-by: NAmadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: NCezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200224125202.13784-1-amadeuszx.slawinski@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>