sound: usb: Add NULL check on return value of iommu_domain_alloc()



Upon allocation failure iommu_domain_alloc() returns NULL.
Driver is not checking for NULL value, which leads to NULL
pointer dereference later.

Change-Id: I9788412af3a34aca8fa8519e7ae6f3349f263a1e
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent 008f057b

sound/usb/usb_audio_qmi_svc.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1007,8 +1007,8 @@ static int uaudio_qmi_plat_probe(struct platform_device *pdev)
		}

		uaudio_qdev->domain = iommu_domain_alloc(msm_iommu_get_bus(&pdev->dev));
		if (!uaudio_qdev) {
		dev_err(&pdev->dev, "failed to callocate iommu domin\n");
		if (!uaudio_qdev->domain) {
		dev_err(&pdev->dev, "failed to callocate iommu domain\n");
		return -ENODEV;
		}