scsi/lsi53c895a: Remove unused lsi_mem_*() return value

lsi_mem_read/write() always return 0 about which their
callers actually don't care. Change the function type
to void.

Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

hw/scsi/lsi53c895a.c

@@ -408,27 +408,25 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val);
 static void lsi_execute_script(LSIState *s);
 static void lsi_reselect(LSIState *s, lsi_request *p);
 
-static inline int lsi_mem_read(LSIState *s, dma_addr_t addr,
+static inline void lsi_mem_read(LSIState *s, dma_addr_t addr,
                                void *buf, dma_addr_t len)
 {
     if (s->dmode & LSI_DMODE_SIOM) {
         address_space_read(&s->pci_io_as, addr, MEMTXATTRS_UNSPECIFIED,
                            buf, len);
-        return 0;
     } else {
-        return pci_dma_read(PCI_DEVICE(s), addr, buf, len);
+        pci_dma_read(PCI_DEVICE(s), addr, buf, len);
     }
 }
 
-static inline int lsi_mem_write(LSIState *s, dma_addr_t addr,
+static inline void lsi_mem_write(LSIState *s, dma_addr_t addr,
                                 const void *buf, dma_addr_t len)
 {
     if (s->dmode & LSI_DMODE_DIOM) {
         address_space_write(&s->pci_io_as, addr, MEMTXATTRS_UNSPECIFIED,
                             buf, len);
-        return 0;
     } else {
-        return pci_dma_write(PCI_DEVICE(s), addr, buf, len);
+        pci_dma_write(PCI_DEVICE(s), addr, buf, len);
     }
 }