net: thunderx: check for failed allocation lmac->dmacs

The allocation of lmac->dmacs is not being checked for allocation
failure. Add the check.

Fixes: 3a34ecfd9d3f ("net: thunderx: add MAC address filter tracking for LMAC")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 5d08d2a..e337da6 100644 (file)
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -1083,6 +1083,8 @@ static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid)
        lmac->dmacs_count = (RX_DMAC_COUNT / bgx->lmac_count);
        lmac->dmacs = kcalloc(lmac->dmacs_count, sizeof(*lmac->dmacs),
                              GFP_KERNEL);
+       if (!lmac->dmacs)
+               return -ENOMEM;
 
        /* Enable lmac */
        bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN);