clocksource/drivers/clps711x: Fix resource leaks in error paths

clocksource/drivers/clps711x: Fix resource leaks in error paths

The current implementation of clps711x_timer_init() has multiple error
paths that directly return without releasing the base I/O memory mapped
via of_iomap(). Fix of_iomap leaks in error paths.

Fixes: 04410efbb6bc ("clocksource/drivers/clps711x: Convert init function to return error")
Fixes: 2a6a8e2d9004 ("clocksource/drivers/clps711x: Remove board support")
Signed-off-by: Zhen Ni <zhen.ni@easystack.cn>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250814123324.1516495-1-zhen.ni@easystack.cn