leds: flash: leds-qcom-flash: Test the correct variable in init

[ Upstream commit 87e552ad ]

This code was passing the incorrect pointer to PTR_ERR_OR_ZERO() so it
always returned success.  It should have been checking the array element
instead of the array itself.

Fixes: 96a2e242 ("leds: flash: Add driver to support flash LED module in QCOM PMICs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/ZoWJS_epjIMCYITg@stanley.mountain


Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>