spi: mxs: fix reference leak in mxs_spi_probe

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in mxs_spi_probe, so we should fix it.

Fixes: b7969caf ("spi: mxs: implement runtime pm")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201106012421.95420-1-zhangqilong3@huawei.com


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