spi: pxa2xx: Disable runtime PM if controller registration fails

Don't leave runtime PM enabled in case devm_spi_register_controller()
returns with an error. Otherwise runtime PM will complain when driver is
reloaded:

[  693.855811] pxa2xx-spi pxa2xx-spi.13: Unbalanced pm_runtime_enable!

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed