staging: hi6421-spmi-pmic: change a return code

return -ENODEV if irq_create_mapping() fails at probing
time.

Suggested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/e978eabd99c0d3c471026659a2c585deb706e2c4.1624606660.git.mchehab+huawei@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>