drivers/rtc/rtc-cmos.c: propagate hpet_register_irq_handler() failure
drivers/rtc/rtc-cmos.c: propagate hpet_register_irq_handler() failure

If hpet_register_irq_handler() fails, cmos_do_probe() will incorrectly
return 0.

Reported-by: Julia Lawall <018ee4f95fc49739477deedb13d2cd210889e607@lip6.fr>
Cc: John Stultz <33837adfb53316eae44aad04041e1240088d76fd@linaro.org>
Cc: Grant Likely <9069e6f5a2b566e2674a0ba1e2bf39c12c195fad@linaro.org>
Cc: Rob Herring <988782c95b9025801edfc9a5b1fd5a8e93699e07@kernel.org>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs