[PATCH -next] bus: arm-integrator-lm: Fix return value check in integrator_ap_lm_probe()

[Wei Yongjun]

In case of error, the function of_find_matching_node() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Fixes: ccea5e8a5918 ("bus: Add driver for Integrator/AP logic modules")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/bus/arm-integrator-lm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/arm-integrator-lm.c b/drivers/bus/arm-integrator-lm.c
index 669ea7e1f92e..845b6c43fef8 100644
--- a/drivers/bus/arm-integrator-lm.c
+++ b/drivers/bus/arm-integrator-lm.c
@@ -78,10 +78,10 @@ static int integrator_ap_lm_probe(struct platform_device 
*pdev)
 
        /* Look up the system controller */
        syscon = of_find_matching_node(NULL, integrator_ap_syscon_match);
-       if (IS_ERR(syscon)) {
+       if (!syscon) {
                dev_err(dev,
                        "could not find Integrator/AP system controller\n");
-               return PTR_ERR(syscon);
+               return -ENODEV;
        }
        map = syscon_node_to_regmap(syscon);
        if (IS_ERR(map)) {