[PATCH v2] lib:Fix more error checking for debugfs_create_dir()

[Wang Ming]

In case of failure, debugfs_create_dir() does not return NULL,
but an error pointer.  Most incorrect error checks were fixed,
but the one in test_fpu_init() was forgotten.

Fix the remaining error check.

Signed-off-by: Wang Ming <machel@xxxxxxxx>
---
 lib/test_fpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/test_fpu.c b/lib/test_fpu.c
index e82db19fed84..5d6aa4691b4a 100644
--- a/lib/test_fpu.c
+++ b/lib/test_fpu.c
@@ -69,7 +69,7 @@ static struct dentry *selftest_dir;
 static int __init test_fpu_init(void)
 {
 	selftest_dir = debugfs_create_dir("selftest_helpers", NULL);
-	if (!selftest_dir)
+	if (IS_ERR(selftest_dir))
 		return -ENOMEM;
 
 	debugfs_create_file_unsafe("test_fpu", 0444, selftest_dir, NULL,
-- 
2.25.1