io_storage: remove redundant assigments

The assignments to 'result' are unneeded.

Change-Id: I18899f10bf9bd7f219f0e47a981683d8b4701bde
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/io/io_storage.c

@@ -34,8 +34,7 @@ static unsigned int dev_count;
 /* Return a boolean value indicating whether a device connector is valid */
 static int is_valid_dev_connector(const io_dev_connector_t *dev_con)
 {
-	int result = (dev_con != NULL) && (dev_con->dev_open != NULL);
-	return result;
+	return (dev_con != NULL) && (dev_con->dev_open != NULL);
 }
 
 
@@ -43,10 +42,10 @@ static int is_valid_dev_connector(const io_dev_connector_t *dev_con)
 static int is_valid_dev(const uintptr_t dev_handle)
 {
 	const io_dev_info_t *dev = (io_dev_info_t *)dev_handle;
-	int result = (dev != NULL) && (dev->funcs != NULL) &&
+
+	return (dev != NULL) && (dev->funcs != NULL) &&
 			(dev->funcs->type != NULL) &&
 			(dev->funcs->type() < IO_TYPE_MAX);
-	return result;
 }
 
 
@@ -54,9 +53,9 @@ static int is_valid_dev(const uintptr_t dev_handle)
 static int is_valid_entity(const uintptr_t handle)
 {
 	const io_entity_t *entity = (io_entity_t *)handle;
-	int result = (entity != NULL) &&
+
+	return (entity != NULL) &&
 			(is_valid_dev((uintptr_t)entity->dev_handle));
-	return result;
 }
 
 
@@ -74,12 +73,10 @@ static int is_valid_seek_mode(io_seek_mode_t mode)
 static int dev_open(const io_dev_connector_t *dev_con, const uintptr_t dev_spec,
 		io_dev_info_t **dev_info)
 {
-	int result;
 	assert(dev_info != NULL);
 	assert(is_valid_dev_connector(dev_con));
 
-	result = dev_con->dev_open(dev_spec, dev_info);
-	return result;
+	return dev_con->dev_open(dev_spec, dev_info);
 }
 
 
@@ -163,11 +160,9 @@ int io_register_device(const io_dev_info_t *dev_info)
 int io_dev_open(const io_dev_connector_t *dev_con, const uintptr_t dev_spec,
 		uintptr_t *handle)
 {
-	int result;
 	assert(handle != NULL);
 
-	result = dev_open(dev_con, dev_spec, (io_dev_info_t **)handle);
-	return result;
+	return dev_open(dev_con, dev_spec, (io_dev_info_t **)handle);
 }