All the callers already call that function before calling into here,
so it ends up being a no-op anyway.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
                      struct rpc_cred *mdscred)
 {
        struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
-       struct rpc_cred *cred = ERR_PTR(-EINVAL);
-
-       if (!nfs4_ff_layout_prepare_ds(lseg, ds_idx, true))
-               goto out;
+       struct rpc_cred *cred;
 
        if (mirror && mirror->cred)
                cred = mirror->cred;
        else
                cred = mdscred;
-out:
        return cred;
 }