PCI: Remove unnecessary returns

Remove unnecessary "return" statements at the end of void functions.  No
functional change intended.

Link: https://lore.kernel.org/r/20190825221039.6977-1-kw@linux.com
Link: https://lore.kernel.org/r/20190826095143.21353-1-kw@linux.comSigned-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/controller/pcie-mediatek.c

@@ -630,8 +630,6 @@ static void mtk_pcie_intr_handler(struct irq_desc *desc)
 	}
 
 	chained_irq_exit(irqchip, desc);
-
-	return;
 }
 
 static int mtk_pcie_setup_irq(struct mtk_pcie_port *port,

drivers/pci/hotplug/cpci_hotplug_core.c

@@ -563,7 +563,6 @@ cleanup_slots(void)
 	}
 cleanup_null:
 	up_write(&list_rwsem);
-	return;
 }
 
 int

drivers/pci/hotplug/cpqphp_core.c

@@ -173,7 +173,6 @@ static void pci_print_IRQ_route(void)
 		dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
 
 	}
-	return;
 }
 
 

drivers/pci/hotplug/cpqphp_ctrl.c

@@ -1872,8 +1872,6 @@ static void interrupt_event_handler(struct controller *ctrl)
 			}
 		}		/* End of FOR loop */
 	}
-
-	return;
 }
 
 
@@ -1943,8 +1941,6 @@ void cpqhp_pushbutton_thread(struct timer_list *t)
 
 		p_slot->state = STATIC_STATE;
 	}
-
-	return;
 }
 
 

drivers/pci/hotplug/cpqphp_nvram.h

@@ -16,10 +16,7 @@
 
 #ifndef CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM
 
-static inline void compaq_nvram_init(void __iomem *rom_start)
-{
-	return;
-}
+static inline void compaq_nvram_init(void __iomem *rom_start) { }
 
 static inline int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl)
 {

drivers/pci/hotplug/rpadlpar_core.c

@@ -473,7 +473,6 @@ int __init rpadlpar_io_init(void)
 void rpadlpar_io_exit(void)
 {
 	dlpar_sysfs_exit();
-	return;
 }
 
 module_init(rpadlpar_io_init);

drivers/pci/hotplug/rpaphp_core.c

@@ -412,7 +412,6 @@ static void __exit cleanup_slots(void)
 		pci_hp_deregister(&slot->hotplug_slot);
 		dealloc_slot_struct(slot);
 	}
-	return;
 }
 
 static int __init rpaphp_init(void)