m68k: convert to setup_initial_init_mm()

Use setup_initial_init_mm() helper to simplify code.

Link: https://lkml.kernel.org/r/20210608083418.137226-8-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/m68k/kernel/setup_mm.c

@@ -258,10 +258,7 @@ void __init setup_arch(char **cmdline_p)
 		}
 	}
 
-	init_mm.start_code = PAGE_OFFSET;
-	init_mm.end_code = (unsigned long)_etext;
-	init_mm.end_data = (unsigned long)_edata;
-	init_mm.brk = (unsigned long)_end;
+	setup_initial_init_mm((void *)PAGE_OFFSET, _etext, _edata, _end);
 
 #if defined(CONFIG_BOOTPARAM)
 	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);

arch/m68k/kernel/setup_no.c

@@ -87,10 +87,7 @@ void __init setup_arch(char **cmdline_p)
 	memory_start = PAGE_ALIGN(_ramstart);
 	memory_end = _ramend;
 
-	init_mm.start_code = (unsigned long) &_stext;
-	init_mm.end_code = (unsigned long) &_etext;
-	init_mm.end_data = (unsigned long) &_edata;
-	init_mm.brk = (unsigned long) 0;
+	setup_initial_init_mm(_stext, _etext, _edata, NULL);
 
 	config_BSP(&command_line[0], sizeof(command_line));