This reverts commit 
906b40b246b0 ("dmaengine: stm32-mdma: Add a check on
read_u32_array")
As stated by bindings "st,ahb-addr-masks" is optional.
The statement inserted by this commit makes this property
mandatory and prevents MDMA to be probed in case property not present.
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 
 
        dmadev->nr_channels = nr_channels;
        dmadev->nr_requests = nr_requests;
-       ret = device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks",
+       device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks",
                                       dmadev->ahb_addr_masks,
                                       count);
-       if (ret)
-               return ret;
        dmadev->nr_ahb_addr_masks = count;
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);