spi: dw: Fix PM disable depth imbalance in dw_spi_bt1_probe

The pm_runtime_enable will increase power disable depth. Thus
a pairing decrement is needed on the error handling path to
keep it balanced according to context.

Fixes:abf00907 ("spi: dw: Add Baikal-T1 SPI Controller glue driver")

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20220924121310.78331-3-zhangqilong3@huawei.com


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