[SPARC64]: Fix sun4v_intr_setenabled() return value check in enable_irq().

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 72e626b..c786d25 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -160,7 +160,7 @@
 		if (err != HV_EOK)
 			printk("sun4v_intr_settarget(%x,%d): err(%d)\n",
 			       ino, cpu, err);
-		sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
+		err = sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
 		if (err != HV_EOK)
 			printk("sun4v_intr_setenabled(%x): err(%d)\n",
 			       ino, err);