[PATCH AUTOSEL 4.4 19/71] mwifiex: pcie: Fix memory leak in mwifiex_pcie_init_evt_ring

From: Navid Emamdoost <redacted>

[ Upstream commit d10dcb615c8e29d403a24d35f8310a7a53e3050c ]

In mwifiex_pcie_init_evt_ring, a new skb is allocated which should be
released if mwifiex_map_pci_memory() fails. The release for skb and
card->evtbd_ring_vbase is added.

Fixes: 0732484b47b5 ("mwifiex: separate ring initialization and ring creation routines")
Signed-off-by: Navid Emamdoost <redacted>
Acked-by: Ganapathi Bhat <redacted>
Signed-off-by: Kalle Valo <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mwifiex/pcie.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
index 268e50ba88a51..4c0a656928996 100644
--- a/drivers/net/wireless/mwifiex/pcie.c
+++ b/drivers/net/wireless/mwifiex/pcie.c

@@ -577,8 +577,11 @@ static int mwifiex_pcie_init_evt_ring(struct mwifiex_adapter *adapter)
 		skb_put(skb, MAX_EVENT_SIZE);
 
 		if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE,
-					   PCI_DMA_FROMDEVICE))
+					   PCI_DMA_FROMDEVICE)) {
+			kfree_skb(skb);
+			kfree(card->evtbd_ring_vbase);
 			return -1;
+		}
 
 		buf_pa = MWIFIEX_SKB_DMA_ADDR(skb);
 

-- 
2.20.1