mwl8k: fix pci dma mapping leak in mwl8k_post_cmd() error path

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 4d3353cb308b..a4336f45f523 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -1439,8 +1439,11 @@ static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
                 return -ENOMEM;
 
         rc = mwl8k_fw_lock(hw);
-        if (rc)
+        if (rc) {
+                pci_unmap_single(priv->pdev, dma_addr, dma_size,
+                                                PCI_DMA_BIDIRECTIONAL);
                 return rc;
+        }
 
         priv->hostcmd_wait = &cmd_wait;
         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);