[PATCH] v9fs_vfs_mkdir(): fix a double free

Fix a double free of "dfid" introduced by commit
da977b2c7eb4d6312f063a7b486f2aad99809710 and spotted by the Coverity
checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/9p/vfs_inode.c

@@ -585,17 +585,14 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 	if (IS_ERR(inode)) {
 		err = PTR_ERR(inode);
 		inode = NULL;
-		goto clean_up_fids;
+		v9fs_fid_destroy(vfid);
+		goto error;
 	}
 
 	dentry->d_op = &v9fs_dentry_operations;
 	d_instantiate(dentry, inode);
 	return 0;
 
-clean_up_fids:
-	if (vfid)
-		v9fs_fid_destroy(vfid);
-
 clean_up_dfid:
 	v9fs_fid_clunk(v9ses, dfid);