debugfs_create_file() returns an error pointer on failure, never NULL,
so the !file check in ei_debugfs_init() never triggers and the
debugfs_remove() cleanup cannot run.

Use IS_ERR() and propagate the actual error via PTR_ERR().

Signed-off-by: Ingyu Jang <ingyujang25@korea.ac.kr>
---
 lib/error-inject.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/error-inject.c b/lib/error-inject.c
index f3d1b70be605c..32f3d1ca9ea23 100644
--- a/lib/error-inject.c
+++ b/lib/error-inject.c
@@ -219,9 +219,9 @@ static int __init ei_debugfs_init(void)
 	dir = debugfs_create_dir("error_injection", NULL);
 
 	file = debugfs_create_file("list", 0444, dir, NULL, &ei_fops);
-	if (!file) {
+	if (IS_ERR(file)) {
 		debugfs_remove(dir);
-		return -ENOMEM;
+		return PTR_ERR(file);
 	}
 
 	return 0;
-- 
2.34.1