dmaengine: xilinx_dma: Fix devm_platform_ioremap_resource error handling

Add missing cleanup in devm_platform_ioremap_resource().
When probe fails remove dma channel resources and disable clocks in
accordance with the order of resources allocated .

Signed-off-by: Swati Agarwal <swati.agarwal@xilinx.com>
Link: https://lore.kernel.org/r/20220817061125.4720-2-swati.agarwal@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 6276934d4d2be9e3345c20921c5cdfce941f4a79..97633f0b8114d5008a928b50add797dd89ee71ed 100644 (file)
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3040,9 +3040,10 @@ static int xilinx_dma_probe(struct platform_device *pdev)
 
        /* Request and map I/O memory */
        xdev->regs = devm_platform_ioremap_resource(pdev, 0);
-       if (IS_ERR(xdev->regs))
-               return PTR_ERR(xdev->regs);
-
+       if (IS_ERR(xdev->regs)) {
+               err = PTR_ERR(xdev->regs);
+               goto disable_clks;
+       }
        /* Retrieve the DMA engine properties from the device tree */
        xdev->max_buffer_len = GENMASK(XILINX_DMA_MAX_TRANS_LEN_MAX - 1, 0);
        xdev->s2mm_chan_id = xdev->dma_config->max_channels / 2;
@@ -3137,7 +3138,7 @@ static int xilinx_dma_probe(struct platform_device *pdev)
        for_each_child_of_node(node, child) {
                err = xilinx_dma_child_probe(xdev, child);
                if (err < 0)
-                       goto disable_clks;
+                       goto error;
        }
 
        if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
@@ -3172,12 +3173,12 @@ static int xilinx_dma_probe(struct platform_device *pdev)
 
        return 0;
 
-disable_clks:
-       xdma_disable_allclks(xdev);
 error:
        for (i = 0; i < xdev->dma_config->max_channels; i++)
                if (xdev->chan[i])
                        xilinx_dma_chan_remove(xdev->chan[i]);
+disable_clks:
+       xdma_disable_allclks(xdev);
 
        return err;
 }