SYSLINK: ipc - Fixed cleanup order of operations

Syslink destroy phase was failing because of incorrect order of
operations in gatepeterson and notify ducati.
Signed-off-by: Simon Que <sque@ti.com>

drivers/dsp/syslink/multicore_ipc/gatepeterson.c

@@ -239,8 +239,12 @@ int gatepeterson_destroy(void)
 		goto exit;
 	}
 
-	if (atomic_dec_return(&gatepeterson_state.ref_count)
-				== GATEPETERSON_MAKE_MAGICSTAMP(0)) {
+	if (!(atomic_dec_return(&gatepeterson_state.ref_count)
+			== GATEPETERSON_MAKE_MAGICSTAMP(0))) {
+		retval = 1;
+		goto exit;
+	}
+
 	/* Temporarily increment ref_count here. */
 	atomic_set(&gatepeterson_state.ref_count,
 				GATEPETERSON_MAKE_MAGICSTAMP(1));
@@ -261,8 +265,6 @@ int gatepeterson_destroy(void)
 	/* Again reset ref_count. */
 	atomic_set(&gatepeterson_state.ref_count,
 				GATEPETERSON_MAKE_MAGICSTAMP(0));
-	}
-
 
 	retval = mutex_lock_interruptible(gatepeterson_state.mod_lock);
 	if (retval != 0)

drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c

@@ -576,8 +576,6 @@ int notify_ducatidrv_delete(struct notify_driver_object **handle_ptr)
 			WARN_ON(1);
 			/*FIXME: Exit gracefully */
 		}
-		omap_mbox_put(ducati_mbox);
-		ducati_mbox = NULL;
 
 		kfree(driver_obj);
 		driver_obj = NULL;
@@ -624,6 +622,8 @@ int notify_ducatidrv_destroy(void)
 		atomic_set(&(notify_ducatidriver_state.ref_count),
 			NOTIFYDRIVERSHM_MAKE_MAGICSTAMP(0));
 
+		omap_mbox_put(ducati_mbox);
+		ducati_mbox = NULL;
 	}
 
 
@@ -663,7 +663,6 @@ int notify_ducatidrv_setup(struct notify_ducatidrv_config *cfg)
 	atomic_cmpmask_and_set(&(notify_ducatidriver_state.ref_count),
 					NOTIFYDRIVERSHM_MAKE_MAGICSTAMP(0),
 					NOTIFYDRIVERSHM_MAKE_MAGICSTAMP(0));
-
 	if (atomic_inc_return(&(notify_ducatidriver_state.ref_count)) !=
 		NOTIFYDRIVERSHM_MAKE_MAGICSTAMP(1u)) {
 		return 1;
@@ -679,6 +678,7 @@ int notify_ducatidrv_setup(struct notify_ducatidrv_config *cfg)
 		atomic_set(&(notify_ducatidriver_state.ref_count),
 				NOTIFYDRIVERSHM_MAKE_MAGICSTAMP(0));
 		status = -ENOMEM;
+
 		goto error_exit;
 	} else {
 		memcpy(&notify_ducatidriver_state.cfg,