[PATCH] powerpc/fadump: Fix section mismatch warning

With some compilers/configs fadump_setup_param_area() isn't inlined into
its caller (which is __init), leading to a section mismatch warning:

  WARNING: modpost: vmlinux: section mismatch in reference:
  fadump_setup_param_area+0x200 (section: .text.fadump_setup_param_area)
  -> memblock_phys_alloc_range (section: .init.text)

Fix it by adding an __init annotation.

Fixes: 683eab94da75 ("powerpc/fadump: setup additional parameters for dump capture kernel")
Reported-by: Stephen Rothwell <redacted>
Closes: https://lore.kernel.org/all/20240515163708.3380c4d1@canb.auug.org.au/ (local)
Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/all/202405140922.oucLOx4Y-lkp@intel.com/ (local)
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/kernel/fadump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index 2276bacc4170..60f974775fc8 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c

@@ -1740,7 +1740,7 @@ static void __init fadump_process(void)
  * Reserve memory to store additional parameters to be passed
  * for fadump/capture kernel.
  */
-static void fadump_setup_param_area(void)
+static void __init fadump_setup_param_area(void)
 {
 	phys_addr_t range_start, range_end;
 

-- 
2.45.0