configfs: move the dereference below the NULL test

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 712b10f64c70..e9dcfa3c208c 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -1037,10 +1037,11 @@ static int configfs_dump(struct configfs_dirent *sd, int level)
 static int configfs_depend_prep(struct dentry *origin,
                                 struct config_item *target)
 {
-        struct configfs_dirent *child_sd, *sd = origin->d_fsdata;
+        struct configfs_dirent *child_sd, *sd;
         int ret = 0;
 
-        BUG_ON(!origin || !sd);
+        BUG_ON(!origin || !origin->d_fsdata);
+        sd = origin->d_fsdata;
 
         if (sd->s_element == target)  /* Boo-yah */
                 goto out;