[SCSI] qla2xxx: Fix for build warning

drivers/scsi/qla2xxx/qla_os.c: In function 'qla2x00_probe_one':
drivers/scsi/qla2xxx/qla_os.c:1582: warning: 'mem_only' is used uninitialized in this function

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 05db166..9830fcb 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1563,7 +1563,7 @@
 	char pci_info[30];
 	char fw_str[30];
 	struct scsi_host_template *sht;
-	int bars, mem_only, max_id = 0;
+	int bars, max_id, mem_only = 0;
 	uint16_t req_length = 0, rsp_length = 0;
 
 	bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);