ARC: perf: Remove unnecessary local variable

Directly return the result of perf_pmu_register() in
arc_pmu_device_probe() instead of assigning and returning variable ret.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/perf_event.c

@@ -268,7 +268,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
 {
 	struct arc_reg_pct_build pct_bcr;
 	struct arc_reg_cc_build cc_bcr;
-	int i, j, ret;
+	int i, j;
 
 	union cc_name {
 		struct {
@@ -335,9 +335,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
 	/* ARC 700 PMU does not support sampling events */
 	arc_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
 
-	ret = perf_pmu_register(&arc_pmu->pmu, pdev->name, PERF_TYPE_RAW);
-
-	return ret;
+	return perf_pmu_register(&arc_pmu->pmu, pdev->name, PERF_TYPE_RAW);
 }
 
 #ifdef CONFIG_OF