perf symbols: Simplify out_fixup in kernel syms loading

The only site that jumps to out_fixup has (kallsyms_filename == NULL).
And all paths that reach 'if (err > 0)' without 'goto out_fixup' have
kallsyms_filename != NULL.

So skip over both the check & dso__set_long_name(), and remove the
check.
Signed-off-by: NCody P Schafer <cody@linux.vnet.ibm.com>
Cc: David Hansen <dave@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Matt Hellsley <matthltc@us.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1344637382-22789-8-git-send-email-cody@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/symbol.c

@@ -1503,9 +1503,8 @@ static int dso__load_kernel_sym(struct dso *dso, struct map *map,
 	free(kallsyms_allocated_filename);
 
 	if (err > 0) {
-out_fixup:
-		if (kallsyms_filename != NULL)
 		dso__set_long_name(dso, strdup("[kernel.kallsyms]"));
+out_fixup:
 		map__fixup_start(map);
 		map__fixup_end(map);
 	}