ovl: fix debug print in case of mkdir error

We want to print the name in case of mkdir failure and now we will
get a cryptic (efault) as name.

Fixes: c54b386 ("VFS: Change vfs_mkdir() to return the dentry.")
Signed-off-by: Amir Goldstein <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: amir73il

fs/overlayfs/overlayfs.h

@@ -246,9 +246,11 @@ static inline struct dentry *ovl_do_mkdir(struct ovl_fs *ofs,
 					  struct dentry *dentry,
 					  umode_t mode)
 {
-	dentry = vfs_mkdir(ovl_upper_mnt_idmap(ofs), dir, dentry, mode);
-	pr_debug("mkdir(%pd2, 0%o) = %i\n", dentry, mode, PTR_ERR_OR_ZERO(dentry));
-	return dentry;
+	struct dentry *ret;
+
+	ret = vfs_mkdir(ovl_upper_mnt_idmap(ofs), dir, dentry, mode);
+	pr_debug("mkdir(%pd2, 0%o) = %i\n", dentry, mode, PTR_ERR_OR_ZERO(ret));
+	return ret;
 }
 
 static inline int ovl_do_mknod(struct ovl_fs *ofs,