clk: qcom: gdsc: Fix error path on registration of multiple pm subdomains

clk: qcom: gdsc: Fix error path on registration of multiple pm subdomains

Some pm subdomains may be left in added to a parent domain state, if
gdsc_add_subdomain_list() function fails in the middle and bails from
a GDSC power domain controller registration out.

Fixes: b489235b4dc0 ("clk: qcom: Support attaching GDSCs to multiple parents")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bod@kernel.org>
Link: https://lore.kernel.org/r/20260328012619.832770-1-vladimir.zapolskiy@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>