[PATCH] clocksource/timer-of: checking for NULL instead of IS_ERR()

[Dan Carpenter]

of_io_request_and_map() doesn't return NULL, it returns error pointers.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
index f6e7491c873c..f83d52e313d2 100644
--- a/drivers/clocksource/timer-of.c
+++ b/drivers/clocksource/timer-of.c
@@ -120,9 +120,9 @@ static __init int timer_base_init(struct device_node *np,
        const char *name = of_base->name ? of_base->name : np->full_name;
 
        of_base->base = of_io_request_and_map(np, of_base->index, name);
-       if (!of_base->base) {
+       if (IS_ERR(of_base->base)) {
                pr_err("Failed to iomap (%s)\n", name);
-               return -ENXIO;
+               return PTR_ERR(of_base->base);
        }
 
        return 0;