Phonet: fix double free in GPRS outbound packet error path

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/phonet/pep-gprs.c b/net/phonet/pep-gprs.c
index 6a91a32..4aa8885 100644
--- a/net/phonet/pep-gprs.c
+++ b/net/phonet/pep-gprs.c
@@ -207,7 +207,6 @@
 				dev->name, err);
 		dev->stats.tx_aborted_errors++;
 		dev->stats.tx_errors++;
-		dev_kfree_skb(skb);
 	} else {
 		dev->stats.tx_packets++;
 		dev->stats.tx_bytes += len;