spi: stm32-qspi: fix reference leak in stm32 qspi operations

spi: stm32-qspi: fix reference leak in stm32 qspi operations

[ Upstream commit 88e1419b5ee30cc50e0c4d5265bdee1ba04af539 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in two callers(stm32_qspi_exec_op and
stm32_qspi_setup), so we should fix it.

Fixes: 9d282c17b023a ("spi: stm32-qspi: Add pm_runtime support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Link: https://lore.kernel.org/r/20201106015357.141235-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>