[PATCH net-next] net: vlan: Fixed signedness in vlan_group_prealloc_vid()

[Florian Fainelli <f.fainelli@gmail.com>]

After commit d0186842ec5f ("net: vlan: Avoid using BUG() in
vlan_proto_idx()"), vlan_proto_idx() was changed to return a signed
integer, however one of its called: vlan_group_prealloc_vid() was still
using an unsigned integer for its return value, fix that.

Fixes: d0186842ec5f ("net: vlan: Avoid using BUG() in vlan_proto_idx()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/8021q/vlan.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 6c08de1116c1..f292e0267bb9 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -51,8 +51,9 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg,
 				   __be16 vlan_proto, u16 vlan_id)
 {
 	struct net_device **array;
-	unsigned int pidx, vidx;
+	unsigned int vidx;
 	unsigned int size;
+	int pidx;
 
 	ASSERT_RTNL();
 
-- 
2.25.1