9p: remove never used return variable

Get rid of the useless 'err' variable, since the return is treated
farther down without the use of it.

Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

fs/9p/vfs_inode_dotl.c

@@ -473,13 +473,11 @@ static int
 v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
 		 struct kstat *stat)
 {
-	int err;
 	struct v9fs_session_info *v9ses;
 	struct p9_fid *fid;
 	struct p9_stat_dotl *st;
 
 	p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
-	err = -EPERM;
 	v9ses = v9fs_dentry2v9ses(dentry);
 	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
 		generic_fillattr(dentry->d_inode, stat);