samples: net: zperf: Ignore error when creating TCP sample pkt

When sending TCP sample packet, just fill the packet to max and
ignore any overflow error.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
diff --git a/samples/net/zperf/src/zperf_tcp_uploader.c b/samples/net/zperf/src/zperf_tcp_uploader.c
index 25e1bf0..092395d 100644
--- a/samples/net/zperf/src/zperf_tcp_uploader.c
+++ b/samples/net/zperf/src/zperf_tcp_uploader.c
@@ -49,7 +49,6 @@
 		struct net_pkt *pkt;
 		struct net_buf *frag;
 		u32_t loop_time;
-		bool st;
 
 		/* Timestamps */
 		loop_time = k_cycle_get_32();
@@ -71,15 +70,8 @@
 		net_pkt_frag_add(pkt, frag);
 
 		/* Fill in the TCP payload */
-		st = net_pkt_append_all(pkt, sizeof(sample_packet),
-				     sample_packet, K_FOREVER);
-		if (!st) {
-			printk(TAG "ERROR! Failed to fill packet\n");
-
-			net_pkt_unref(pkt);
-			nb_errors++;
-			break;
-		}
+		net_pkt_append(pkt, sizeof(sample_packet),
+			       sample_packet, K_FOREVER);
 
 		/* Send the packet */
 		ret = net_context_send(pkt, NULL, K_NO_WAIT, NULL, NULL);