tests: don't expect multishot recv overflow backlogging

Multishots may and are likely to complete when there is no space in CQ,
don't rely on overflows.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d078c0f797322bd01d8c91743d652b734e83e9ba.1691758633.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

test/recv-multishot.c

@@ -271,7 +271,7 @@ static int test(struct args *args)
 		 */
 		bool const early_last = args->early_error == ERROR_EARLY_OVERFLOW &&
 					!args->wait_each &&
-					i == N_CQE_OVERFLOW &&
+					i >= N_CQE_OVERFLOW &&
 					!(cqe->flags & IORING_CQE_F_MORE);
 
 		bool const should_be_last =