brcmfmac: fix skb leak in brcmf_sdio_txpkt_prep_sg error path.

Commit 1eb4301867 (brcmfmac: fix txglomming scatter-gather packet transfers)
added an allocation of an skb via brcmu_pkt_buf_get_skb() but forgot to
free it on one of the error paths.

Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Dave Jones<davej@fedoraproject.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
index 119ee6e..ddaa9ef 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
@@ -1948,8 +1948,10 @@ static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus,
                if (pkt_pad == NULL)
                        return -ENOMEM;
                ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad);
-               if (unlikely(ret < 0))
+               if (unlikely(ret < 0)) {
+                       kfree_skb(pkt_pad);
                        return ret;
+               }
                memcpy(pkt_pad->data,
                       pkt->data + pkt->len - tail_chop,
                       tail_chop);