ASoC: stm32: sai: fix clk prepare imbalance on probe failure

ASoC: stm32: sai: fix clk prepare imbalance on probe failure

Make sure to unprepare the parent clock also on probe failures (e.g.
probe deferral).

Fixes: a14bf98c045b ("ASoC: stm32: sai: fix possible circular locking")
Cc: stable@vger.kernel.org	# 5.5
Cc: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: olivier moysan <olivier.moysan@foss.st.com>
Link: https://patch.msgid.link/20251124104908.15754-3-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>