[PATCH] stmmac: fix noderef.cocci warnings

[kbuild test robot]

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:115:15-21: ERROR: 
application of sizeof to pointer

 sizeof when applied to a pointer typed expression gives the size of
 the pointer

Generated by: scripts/coccinelle/misc/noderef.cocci

CC: Giuseppe Cavallaro <peppe.cavall...@st.com>
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---

 stmmac_platform.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -112,7 +112,7 @@ static struct stmmac_axi *stmmac_axi_set
        if (!np)
                return NULL;
 
-       axi = kzalloc(sizeof(axi), GFP_KERNEL);
+       axi = kzalloc(sizeof(*axi), GFP_KERNEL);
        if (!axi)
                return ERR_PTR(-ENOMEM);