txx9dmac: return DMA_SUCCESS immediately from device_tx_status()

There is no point to go throught the rest of the function if first call to
dma_cookie_status() returned DMA_SUCCESS.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 6 insertions, 7 deletions

diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index a59fb4841d4c..59357db62359 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -962,15 +962,14 @@ txx9dmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
         enum dma_status ret;
 
         ret = dma_cookie_status(chan, cookie, txstate);
-        if (ret != DMA_SUCCESS) {
-                spin_lock_bh(&dc->lock);
-                txx9dmac_scan_descriptors(dc);
-                spin_unlock_bh(&dc->lock);
+        if (ret == DMA_SUCCESS)
+                return DMA_SUCCESS;
 
-                ret = dma_cookie_status(chan, cookie, txstate);
-        }
+        spin_lock_bh(&dc->lock);
+        txx9dmac_scan_descriptors(dc);
+        spin_unlock_bh(&dc->lock);
 
-        return ret;
+        return dma_cookie_status(chan, cookie, txstate);
 }
 
 static void txx9dmac_chain_dynamic(struct txx9dmac_chan *dc,