[UBUNTU Bionic/Focal/Jammy/Kinetic 1/1] xen/netback: fix build warning

[Thadeu Lima de Souza Cascardo]

From: Juergen Gross <jgross at suse.com>

BugLink: https://bugs.launchpad.net/bugs/2002889

Commit ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in
the non-linear area") introduced a (valid) build warning. There have
even been reports of this problem breaking networking of Xen guests.

Fixes: ad7f402ae4f4 ("xen/netback: Ensure protocol headers don't fall in the non-linear area")
Signed-off-by: Juergen Gross <jgross at suse.com>
Reviewed-by: Jan Beulich <jbeulich at suse.com>
Reviewed-by: Ross Lagerwall <ross.lagerwall at citrix.com>
Tested-by: Jason Andryuk <jandryuk at gmail.com>
Signed-off-by: Juergen Gross <jgross at suse.com>
(cherry picked from commit 7dfa764e0223a324366a2a1fc056d4d9d4e95491)
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo at canonical.com>
---
 drivers/net/xen-netback/netback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index c96f731f1ed1..567b9b93cd4c 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -528,7 +528,7 @@ static int xenvif_tx_check_gop(struct xenvif_queue *queue,
 	const bool sharedslot = nr_frags &&
 				frag_get_pending_idx(&shinfo->frags[0]) ==
 				    copy_pending_idx(skb, copy_count(skb) - 1);
-	int i, err;
+	int i, err = 0;
 
 	for (i = 0; i < copy_count(skb); i++) {
 		int newerr;
-- 
2.34.1