drivers: leds-qpnp-flash: Fix infinite loop in flash driver.

Fix a possible infinite loop in case of failure during led
flash module disable.

CRs-Fixed: 1001113
Change-Id: I4bba932691dd83f92f25e4bd3c597bfeae20618f
Signed-off-by: ansharma <ansharma@codeaurora.org>