leds: led-qpnp-flash: Re-check fault status if open fault is detected

If LED open fault is detected, the open_fault flag will be set always
and the flash won't be controlled even if the hardware open fault is
recovered. So check the LED fault status everytime if the open fault
has been detected.

CRs-Fixed: 2093952
Change-Id: I0b449a7d030d091d24aca992cdd7c06150d8ff30
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>