[PATCH] NIOS2: setup.c: drop unused variable 'dram_start'

[Randy Dunlap]

This is a nuisance when CONFIG_WERROR is set, so drop the variable
declaration since the code that used it was removed.

../arch/nios2/kernel/setup.c: In function 'setup_arch':
../arch/nios2/kernel/setup.c:152:13: warning: unused variable 'dram_start' [-Wunused-variable]
  152 |         int dram_start;

Fixes: 7f7bc20bc41a ("nios2: Don't use _end for calculating min_low_pfn")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Andreas Oetken <andreas.oetken@xxxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
---
 arch/nios2/kernel/setup.c |    2 --
 1 file changed, 2 deletions(-)

--- linux-next-20210917.orig/arch/nios2/kernel/setup.c
+++ linux-next-20210917/arch/nios2/kernel/setup.c
@@ -149,8 +149,6 @@ static void __init find_limits(unsigned
 
 void __init setup_arch(char **cmdline_p)
 {
-	int dram_start;
-
 	console_verbose();
 
 	memory_start = memblock_start_of_DRAM();