net/sonic: Fix a resource leak in an error handling path in 'jazz_sonic_probe()'

A call to 'dma_alloc_coherent()' is hidden in 'sonic_alloc_descriptors()',
called from 'sonic_probe1()'.

This is correctly freed in the remove function, but not in the error
handling path of the probe function.
Fix it and add the missing 'dma_free_coherent()' call.

While at it, rename a label in order to be slightly more informative.

Fixes: efcce839360f ("[PATCH] macsonic/jazzsonic network drivers update")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/natsemi/jazzsonic.c b/drivers/net/ethernet/natsemi/jazzsonic.c
index bfa0c0d..8b018ed 100644 (file)
--- a/drivers/net/ethernet/natsemi/jazzsonic.c
+++ b/drivers/net/ethernet/natsemi/jazzsonic.c
@@ -208,11 +208,13 @@ static int jazz_sonic_probe(struct platform_device *pdev)
 
        err = register_netdev(dev);
        if (err)
-               goto out1;
+               goto undo_probe1;
 
        return 0;
 
-out1:
+undo_probe1:
+       dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+                         lp->descriptors, lp->descriptors_laddr);
        release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
 out:
        free_netdev(dev);