[PATCH] net: thunderx: check for failed allocation lmac->dmacs

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

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.k...@canonical.com>
---
 drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c 
b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 5d08d2aeb172..e337da6ba2a4 100644
--- 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);
-- 
2.17.1