fs: fix binfmt_aout.c build error

Various builds (such as i386:allmodconfig) fail with

fs/binfmt_aout.c:133:2: error: expected identifier or '(' before 'return'
fs/binfmt_aout.c:134:1: error: expected identifier or '(' before '}' token

[ Oops. My bad, I had stupidly thought that "allmodconfig" covered this
on x86-64 too, but it obviously doesn't. Egg on my face. - Linus ]

Fixes: 5d22fc25d4fc ("mm: remove more IS_ERR_VALUE abuses")
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/binfmt_aout.c

···
 	end = PAGE_ALIGN(end);
 	if (end > start)
 		return vm_brk(start, end - start);
-	}
 	return 0;
 }