RDS: remove redundant __GFP_NOWARN

GFP_NOWAIT already includes __GFP_NOWARN, so let's remove the redundant
__GFP_NOWARN.

Signed-off-by: Qianfeng Rong <[e-mail]>
Reviewed-by: Allison Henderson <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

net/rds/ib_recv.c

···
 		rds_ib_stats_inc(s_ib_rx_ring_empty);
 
 	if (rds_ib_ring_low(&ic->i_recv_ring)) {
-		rds_ib_recv_refill(conn, 0, GFP_NOWAIT | __GFP_NOWARN);
+		rds_ib_recv_refill(conn, 0, GFP_NOWAIT);
 		rds_ib_stats_inc(s_ib_rx_refill_from_cq);
 	}
 }