clocksource/drivers/tegra: Release all IRQ's on request_irq() error

Release all requested IRQ's on the request error to properly clean up
allocated resources.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>