diff --git a/drivers/clk/rockchip/clk-ddr.c b/drivers/clk/rockchip/clk-ddr.c
index 7fafcdf87de9..4a008f013019 100644
--- a/drivers/clk/rockchip/clk-ddr.c
+++ b/drivers/clk/rockchip/clk-ddr.c
@@ -299,12 +299,13 @@ static const struct clk_ops rockchip_ddrclk_sip_ops_v2 = {
 	.get_parent = rockchip_ddrclk_get_parent,
 };
 
-struct clk *rockchip_clk_register_ddrclk(const char *name, int flags,
-					 const char *const *parent_names,
-					 u8 num_parents, int mux_offset,
-					 int mux_shift, int mux_width,
-					 int div_shift, int div_width,
-					 int ddr_flag, void __iomem *reg_base)
+struct clk * __init
+rockchip_clk_register_ddrclk(const char *name, int flags,
+			     const char *const *parent_names,
+			     u8 num_parents, int mux_offset,
+			     int mux_shift, int mux_width,
+			     int div_shift, int div_width,
+			     int ddr_flag, void __iomem *reg_base)
 {
 	struct rockchip_ddrclk *ddrclk;
 	struct clk_init_data init;