powerpc/mm: fix "section_base" set but not used

The commit 24b6d4164348 ("mm: pass the vmem_altmap to vmemmap_free")
removed a line in vmemmap_free(),

altmap = to_vmem_altmap((unsigned long) section_base);

but left a variable no longer used.

arch/powerpc/mm/init_64.c: In function 'vmemmap_free':
arch/powerpc/mm/init_64.c:277:16: error: variable 'section_base' set but
not used [-Werror=unused-but-set-variable]

Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index a5091c034747..a4c155af1597 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -274,7 +274,6 @@ void __ref vmemmap_free(unsigned long start, unsigned long end,
 
         for (; start < end; start += page_size) {
                 unsigned long nr_pages, addr;
-                struct page *section_base;
                 struct page *page;
 
                 /*
@@ -290,7 +289,6 @@ void __ref vmemmap_free(unsigned long start, unsigned long end,
                         continue;
 
                 page = pfn_to_page(addr >> PAGE_SHIFT);
-                section_base = pfn_to_page(vmemmap_section_start(start));
                 nr_pages = 1 << page_order;
                 base_pfn = PHYS_PFN(addr);