mm: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Link: http://lkml.kernel.org/r/20190122152151.16139-14-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Laura Abbott <labbott@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 16 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 09bf2c5f8b4b..9be9a22ebe35 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3230,24 +3230,14 @@ static int __init fail_page_alloc_debugfs(void)
 
         dir = fault_create_debugfs_attr("fail_page_alloc", NULL,
                                         &fail_page_alloc.attr);
-        if (IS_ERR(dir))
-                return PTR_ERR(dir);
-
-        if (!debugfs_create_bool("ignore-gfp-wait", mode, dir,
-                                &fail_page_alloc.ignore_gfp_reclaim))
-                goto fail;
-        if (!debugfs_create_bool("ignore-gfp-highmem", mode, dir,
-                                &fail_page_alloc.ignore_gfp_highmem))
-                goto fail;
-        if (!debugfs_create_u32("min-order", mode, dir,
-                                &fail_page_alloc.min_order))
-                goto fail;
 
-        return 0;
-fail:
-        debugfs_remove_recursive(dir);
+        debugfs_create_bool("ignore-gfp-wait", mode, dir,
+                            &fail_page_alloc.ignore_gfp_reclaim);
+        debugfs_create_bool("ignore-gfp-highmem", mode, dir,
+                            &fail_page_alloc.ignore_gfp_highmem);
+        debugfs_create_u32("min-order", mode, dir, &fail_page_alloc.min_order);
 
-        return -ENOMEM;
+        return 0;
 }
 
 late_initcall(fail_page_alloc_debugfs);