net: wwan: iosm: Fix error handling path in ipc_pcie_probe()

Smatch reports:
drivers/net/wwan/iosm/iosm_ipc_pcie.c:298 ipc_pcie_probe()
warn: missing unwind goto?

When dma_set_mask fails it directly returns without disabling pci
device and freeing ipc_pcie. Fix this my calling a correct goto label

As dma_set_mask returns either 0 or -EIO, we can use a goto label, as
it finally returns -EIO.

Add a set_mask_fail goto label which stands consistent with other goto
labels in this function..

Fixes: 035e3befc191 ("net: wwan: iosm: fix driver not working with INTEL_IOMMU disabled")
Reviewed-by: Simon Horman <[e-mail]>
Signed-off-by: Harshit Mogalapalli <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/wwan/iosm/iosm_ipc_pcie.c

···
 	ret = dma_set_mask(ipc_pcie->dev, DMA_BIT_MASK(64));
 	if (ret) {
 		dev_err(ipc_pcie->dev, "Could not set PCI DMA mask: %d", ret);
-		return ret;
+		goto set_mask_fail;
 	}
 
 	ipc_pcie_config_aspm(ipc_pcie);
···
 imem_init_fail:
 	ipc_pcie_resources_release(ipc_pcie);
 resources_req_fail:
+set_mask_fail:
 	pci_disable_device(pci);
 pci_enable_fail:
 	kfree(ipc_pcie);