scsi: qla2xxx: Make qla_set_ini_mode() return void

The return value is not used by the caller and the local variable 'rc' is
not needed. Make qla_set_ini_mode() return void and remove 'rc'.  This also
fixes the following coccicheck warning:

drivers/scsi/qla2xxx/qla_attr.c:1906:5-7: Unneeded variable: "rc".
Return "0" on line 2180

Link: https://lore.kernel.org/r/20200429140952.8240-1-yanaijie@huawei.comSigned-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_attr.c

@@ -1925,9 +1925,8 @@ static char *mode_to_str[] = {
 };
 
 #define NEED_EXCH_OFFLOAD(_exchg) ((_exchg) > FW_DEF_EXCHANGES_CNT)
-static int qla_set_ini_mode(scsi_qla_host_t *vha, int op)
+static void qla_set_ini_mode(scsi_qla_host_t *vha, int op)
 {
-	int rc = 0;
 	enum {
 		NO_ACTION,
 		MODE_CHANGE_ACCEPT,
@@ -2200,8 +2199,6 @@ static int qla_set_ini_mode(scsi_qla_host_t *vha, int op)
 		    vha->ql2xexchoffld, vha->u_ql2xexchoffld);
 		break;
 	}
-
-	return rc;
 }
 
 static ssize_t