[PATCH] allocate_flower_entry: should check for null deref

[Navid Emamdoost]

allocate_flower_entry does not check for allocation success, but tries
to deref the result. I only moved the spin_lock under null check, because
 the caller is checking allocation's status at line 652.

Signed-off-by: Navid Emamdoost <navid.emamdo...@gmail.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c 
b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
index 312599c6b35a..e447976bdd3e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
@@ -67,7 +67,8 @@ static struct ch_tc_pedit_fields pedits[] = {
 static struct ch_tc_flower_entry *allocate_flower_entry(void)
 {
        struct ch_tc_flower_entry *new = kzalloc(sizeof(*new), GFP_KERNEL);
-       spin_lock_init(&new->lock);
+       if (new)
+               spin_lock_init(&new->lock);
        return new;
 }
 
-- 
2.17.1