net: airoha: Fix a NULL vs IS_ERR() bug in airoha_npu_run_firmware()

The devm_ioremap_resource() function returns error pointers.  It never
returns NULL.  Update the check to match.

Fixes: e27dba1951ce ("net: Use of_reserved_mem_region_to_resource{_byname}() for "memory-region"")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/fc6d194e-6bf5-49ca-bc77-3fdfda62c434@sabinyo.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index bda3c93e826112b03ad742cf37a979637af3eb0c..9ab964c536e11173e3e3bb4854b4f886c75a0051 100644 (file)
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -179,8 +179,8 @@ static int airoha_npu_run_firmware(struct device *dev, void __iomem *base,
        }
 
        addr = devm_ioremap_resource(dev, res);
-       if (!addr) {
-               ret = -ENOMEM;
+       if (IS_ERR(addr)) {
+               ret = PTR_ERR(addr);
                goto out;
        }