i2c: qcom-geni: Add missing clk_disable_unprepare in geni_i2c_runtime_resume

Add the missing clk_disable_unprepare() before return in
geni_i2c_runtime_resume().

Fixes: 14d02fba ("i2c: qcom-geni: add desc struct to prepare support for I2C Master Hub variant")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>