x86/platform/mellanox: Fix return value check in mlxplat_init()

In case of error, the function platform_device_register_simple()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check must therefor be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Cc: platform-driver-x86@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/platform/mellanox/mlx-platform.c b/arch/x86/platform/mellanox/mlx-platform.c
index e1dc152..7dcfcca 100644 (file)
--- a/arch/x86/platform/mellanox/mlx-platform.c
+++ b/arch/x86/platform/mellanox/mlx-platform.c
@@ -200,8 +200,8 @@ static int __init mlxplat_init(void)
                                        mlxplat_lpc_resources,
                                        ARRAY_SIZE(mlxplat_lpc_resources));
 
-       if (!mlxplat_dev)
-               return -ENOMEM;
+       if (IS_ERR(mlxplat_dev))
+               return PTR_ERR(mlxplat_dev);
 
        priv = devm_kzalloc(&mlxplat_dev->dev, sizeof(struct mlxplat_priv),
                            GFP_KERNEL);