diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 160d79d58dd59aac85651fd9798f8eb8d3574af0..b1ca38642251cde9ba03184331d7af5fe83006de 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -86,11 +86,6 @@ static void __init setup_initrd(void)
 	initrd_start = 0;
 	initrd_end = 0;
 }
-
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
 #endif /* CONFIG_BLK_DEV_INITRD */
 
 void __init setup_bootmem(void)