pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Link: https://lore.kernel.org/r/20200521031355.7022-1-dinghao.liu@zju.edu.cnSigned-off-by: NDinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Acked-by: NVidya Sagar <vidyas@nvidia.com>