octeontx2-af: Simplify a size computation in rvu_npc_exact_init()

We know that table_size = table->mem_table.depth * table->mem_table.ways,
so use it instead, it is less verbose.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/5230dabe27f48948a9fd0f50a62e2437b65e6a6e.1669378798.git.christophe.jaillet@wanadoo.frSigned-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c

@@ -1913,7 +1913,7 @@ int rvu_npc_exact_init(struct rvu *rvu)
 
 	dev_dbg(rvu->dev, "%s: Allocated bitmap for 32 entry cam\n", __func__);
 
-	table->tot_ids = (table->mem_table.depth * table->mem_table.ways) + table->cam_table.depth;
+	table->tot_ids = table_size + table->cam_table.depth;
 	table->id_bmap = devm_bitmap_zalloc(rvu->dev, table->tot_ids,
 					    GFP_KERNEL);