[MIPS] Fix the fix for divide by zero error in build_{clear,copy}_page

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/page.c b/arch/mips/mm/page.c
index cab81f4..1edf0cb 100644
--- a/arch/mips/mm/page.c
+++ b/arch/mips/mm/page.c
@@ -460,7 +460,7 @@
 		build_copy_load_pref(&buf, -off);
 		off -= cache_line_size;
 	}
-	off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+	off = cache_line_size ? min(8, pref_bias_copy_store / cache_line_size) *
 	                        cache_line_size : 0;
 	while (off) {
 		build_copy_store_pref(&buf, -off);