net/mlx5: Update mcg.c new cmd interface

Do mass update of mcg.c to reuse newly introduced
mlx5_cmd_exec_in*() interfaces.
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/mcg.c

@@ -38,28 +38,26 @@
 
 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
 {
-	u32 out[MLX5_ST_SZ_DW(attach_to_mcg_out)] = {0};
-	u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)]   = {0};
+	u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)] = {};
 	void *gid;
 
 	MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG);
 	MLX5_SET(attach_to_mcg_in, in, qpn, qpn);
 	gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid);
 	memcpy(gid, mgid, sizeof(*mgid));
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, attach_to_mcg, in);
 }
 EXPORT_SYMBOL(mlx5_core_attach_mcg);
 
 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
 {
-	u32 out[MLX5_ST_SZ_DW(detach_from_mcg_out)] = {0};
-	u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)]   = {0};
+	u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)] = {};
 	void *gid;
 
 	MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
 	MLX5_SET(detach_from_mcg_in, in, qpn, qpn);
 	gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid);
 	memcpy(gid, mgid, sizeof(*mgid));
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, detach_from_mcg, in);
 }
 EXPORT_SYMBOL(mlx5_core_detach_mcg);