[PATCH] cpufreq: apple-soc: Fix an IS_ERR() vs NULL check

[Dan Carpenter <error27@xxxxxxxxx>]

The of_iomap() function returns NULL if it fails.  It never returns
error pointers.  Fix the check accordingly.

Fixes: 6286bbb40576 ("cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states")
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
---
 drivers/cpufreq/apple-soc-cpufreq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/apple-soc-cpufreq.c b/drivers/cpufreq/apple-soc-cpufreq.c
index c11d22fd84c3..021f423705e1 100644
--- a/drivers/cpufreq/apple-soc-cpufreq.c
+++ b/drivers/cpufreq/apple-soc-cpufreq.c
@@ -189,8 +189,8 @@ static int apple_soc_cpufreq_find_cluster(struct cpufreq_policy *policy,
 	*info = match->data;
 
 	*reg_base = of_iomap(args.np, 0);
-	if (IS_ERR(*reg_base))
-		return PTR_ERR(*reg_base);
+	if (!*reg_base)
+		return -ENOMEM;
 
 	return 0;
 }
-- 
2.39.1