perf/amd/uncore: Do feature check first, before assignments

... and save some unnecessary work. Remove now unused label while at it.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/20170410122047.3026-2-bp@alien8.deSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/events/amd/uncore.c

@@ -509,7 +509,10 @@ static int __init amd_uncore_init(void)
 	int ret = -ENODEV;
 
 	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
-		goto fail_nodev;
+		return -ENODEV;
+
+	if (!boot_cpu_has(X86_FEATURE_TOPOEXT))
+		return -ENODEV;
 
 	switch(boot_cpu_data.x86) {
 		case 23:
@@ -552,9 +555,6 @@ static int __init amd_uncore_init(void)
 	amd_nb_pmu.attr_groups = amd_uncore_attr_groups_df;
 	amd_llc_pmu.attr_groups = amd_uncore_attr_groups_l3;
 
-	if (!boot_cpu_has(X86_FEATURE_TOPOEXT))
-		goto fail_nodev;
-
 	if (boot_cpu_has(X86_FEATURE_PERFCTR_NB)) {
 		amd_uncore_nb = alloc_percpu(struct amd_uncore *);
 		if (!amd_uncore_nb) {
@@ -615,7 +615,6 @@ static int __init amd_uncore_init(void)
 	if (amd_uncore_nb)
 		free_percpu(amd_uncore_nb);
 
-fail_nodev:
 	return ret;
 }
 device_initcall(amd_uncore_init);