rsi: return explicit error values

Explicitly return constants instead of variable (and rely on
it to be explicitly initialized), if the value is supposed
to be fixed anyways. Align it with the rest of the driver,
which does it the same way.
Signed-off-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/rsi/rsi_91x_sdio.c

@@ -844,11 +844,11 @@ static int rsi_init_sdio_interface(struct rsi_hw *adapter,
 				   struct sdio_func *pfunction)
 {
 	struct rsi_91x_sdiodev *rsi_91x_dev;
-	int status = -ENOMEM;
+	int status;
 
 	rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
 	if (!rsi_91x_dev)
-		return status;
+		return -ENOMEM;
 
 	adapter->rsi_dev = rsi_91x_dev;
 
@@ -890,7 +890,7 @@ static int rsi_init_sdio_interface(struct rsi_hw *adapter,
 #ifdef CONFIG_RSI_DEBUGFS
 	adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
 #endif
-	return status;
+	return 0;
 fail:
 	sdio_disable_func(pfunction);
 	sdio_release_host(pfunction);