linux-wandboard

pwm: pxa: Propagate pwmchip_remove() error

If the pwmchip_remove() call fails, propagate the error to the driver's
remove callback. This is required to prevent the module from being
unloaded if a PWM provided by the driver is still in use.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>