RDMA/rxe: Only allow invalidate for appropriate MRs

Local and remote invalidate operations are not allowed by IBA for MRs
created by (re)register memory verbs. This patch checks the MR type in
rxe_invalidate_mr().

Link: https://lore.kernel.org/r/20210914164206.19768-6-rpearsonhpe@gmail.comSigned-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_mr.c

@@ -605,6 +605,12 @@ int rxe_invalidate_mr(struct rxe_qp *qp, u32 rkey)
 		goto err_drop_ref;
 	}
 
+	if (unlikely(mr->type != IB_MR_TYPE_MEM_REG)) {
+		pr_warn("%s: mr->type (%d) is wrong type\n", __func__, mr->type);
+		ret = -EINVAL;
+		goto err_drop_ref;
+	}
+
 	mr->state = RXE_MR_STATE_FREE;
 	ret = 0;