cxgb4: allocate enough data in t4_memory_rw()

MEMWIN0_APERTURE is the size in bytes.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

@@ -417,7 +417,7 @@ static int t4_memory_rw(struct adapter *adap, int mtype, u32 addr, u32 len,
 	if ((addr & 0x3) || (len & 0x3))
 		return -EINVAL;
 
-	data = vmalloc(MEMWIN0_APERTURE/sizeof(__be32));
+	data = vmalloc(MEMWIN0_APERTURE);
 	if (!data)
 		return -ENOMEM;