riscv: Fix build warning for mm/init

Add static keyword for resource_init, this function is only used in this
object file.

Signed-off-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 92002952c621..66f5952f39c0 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -517,7 +517,7 @@ void mark_rodata_ro(void)
 }
 #endif
 
-void __init resource_init(void)
+static void __init resource_init(void)
 {
 	struct memblock_region *region;