usb: musb: cppi41: decrease indentation level

no functional changes, clean up only.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_cppi41.c

@@ -225,10 +225,12 @@ static void cppi41_dma_callback(void *private_data)
 	struct dma_channel *channel = private_data;
 	struct cppi41_dma_channel *cppi41_channel = channel->private_data;
 	struct musb_hw_ep *hw_ep = cppi41_channel->hw_ep;
+	struct cppi41_dma_controller *controller;
 	struct musb *musb = hw_ep->musb;
 	unsigned long flags;
 	struct dma_tx_state txstate;
 	u32 transferred;
+	int is_hs = 0;
 	bool empty;
 
 	spin_lock_irqsave(&musb->lock, flags);
@@ -251,9 +253,9 @@ static void cppi41_dma_callback(void *private_data)
 	empty = musb_is_tx_fifo_empty(hw_ep);
 	if (empty) {
 		cppi41_trans_done(cppi41_channel);
-	} else {
-		struct cppi41_dma_controller *controller;
-		int is_hs = 0;
+		goto out;
+	}
+
 	/*
 	 * On AM335x it has been observed that the TX interrupt fires
 	 * too early that means the TXFIFO is not yet empty but the DMA
@@ -302,7 +304,7 @@ static void cppi41_dma_callback(void *private_data)
 				20 * NSEC_PER_USEC,
 				HRTIMER_MODE_REL);
 	}
-	}
+
 out:
 	spin_unlock_irqrestore(&musb->lock, flags);
 }