[PATCH] perf/x86/amd/uncore: Fix return code for init

[Sandipan Das]

Return the appropriate error code when the registration of hotplug
callbacks fail in init.

Fixes: d6389d3ccc13 ("perf/x86/amd/uncore: Refactor uncore management")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Sandipan Das <sandipan.das@xxxxxxx>
---
 arch/x86/events/amd/uncore.c | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c
index 91f01d6c8f7d..7d768dd01522 100644
--- a/arch/x86/events/amd/uncore.c
+++ b/arch/x86/events/amd/uncore.c
@@ -1039,20 +1039,25 @@ static int __init amd_uncore_init(void)
 	/*
 	 * Install callbacks. Core will call them for each online cpu.
 	 */
-	if (cpuhp_setup_state(CPUHP_PERF_X86_AMD_UNCORE_PREP,
-			      "perf/x86/amd/uncore:prepare",
-			      NULL, amd_uncore_cpu_dead))
+	ret = cpuhp_setup_state(CPUHP_PERF_X86_AMD_UNCORE_PREP,
+				"perf/x86/amd/uncore:prepare",
+				NULL, amd_uncore_cpu_dead);
+	if (ret)
 		goto fail;
 
-	if (cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
-			      "perf/x86/amd/uncore:starting",
-			      amd_uncore_cpu_starting, NULL))
+	ret = cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
+				"perf/x86/amd/uncore:starting",
+				amd_uncore_cpu_starting, NULL);
+	if (ret)
 		goto fail_prep;
-	if (cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
-			      "perf/x86/amd/uncore:online",
-			      amd_uncore_cpu_online,
-			      amd_uncore_cpu_down_prepare))
+
+	ret = cpuhp_setup_state(CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
+				"perf/x86/amd/uncore:online",
+				amd_uncore_cpu_online,
+				amd_uncore_cpu_down_prepare);
+	if (ret)
 		goto fail_start;
+
 	return 0;
 
 fail_start:
-- 
2.34.1