net/rds: Add missing switch/break in rds_recv_worker()

There is a missing break with an unintentional fallthrough
in rds_recv_worker() when c_trans->recv_path(cp) returns -ENOMEM.
While rds_ib_recv_path() sets ret = 0, rds_tcp_read_sock()
can return non-zero and rds_tcp_data_recv() does return -ENOMEM
in some cases, so it's reachable via rds_tcp.ko. Add the missing
break; so we can reschedule the recv_worker with a delay of 2.

Orabug: 38118668

Fixes: 3930fc5 ("rds: Avoid queuing superfluous send and recv work")
Reviewed-by: Gerd Rausch <[email protected]>
Signed-off-by: Sharath Srinivasan <[email protected]>
Signed-off-by: Vijayendra Suman <[email protected]>

Author: sharathmsrini

net/rds/threads.c

@@ -400,6 +400,7 @@ void rds_recv_worker(struct work_struct *work)
 		case -ENOMEM:
 			rds_stats_inc(s_recv_delayed_retry);
 			delay = 2;
+			break;
 		default:
 			return;
 		}