6d2128d2ee
[ Upstream commitf43523620f] The of_iomap() function returns NULL if it fails. It never returns error pointers. Fix the check accordingly. Fixes:6286bbb405("cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states") Signed-off-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>