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IB/usnic: clean up some error handling code 

This code causes a static checker warning:

	drivers/infiniband/hw/usnic/usnic_uiom.c:476 usnic_uiom_alloc_pd()
	warn: passing zero to 'PTR_ERR'

This code isn't buggy, but iommu_domain_alloc() doesn't return an error
pointer so we can simplify the error handling and silence the static
checker warning.

The static checker warning is to catch place which do:

	if (!ptr)
		return ERR_PTR(ptr);

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dave Goodell <dgoodell@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dan Carpenter 2015-06-04 12:02:18 +03:00 committed by Doug Ledford
parent ed0de4a8c9
commit fc3aa45b63
1 changed files with 3 additions and 4 deletions
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7
drivers/infiniband/hw/usnic/usnic_uiom.c
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@ -472,11 +472,10 @@ struct usnic_uiom_pd *usnic_uiom_alloc_pd(void)
return ERR_PTR(-ENOMEM);
pd->domain = domain = iommu_domain_alloc(&pci_bus_type);
if (IS_ERR_OR_NULL(domain)) {
usnic_err("Failed to allocate IOMMU domain with err %ld\n",
PTR_ERR(pd->domain));
if (!domain) {
usnic_err("Failed to allocate IOMMU domain");
kfree(pd);
return ERR_PTR(domain ? PTR_ERR(domain) : -ENOMEM);
return ERR_PTR(-ENOMEM);
}
iommu_set_fault_handler(pd->domain, usnic_uiom_dma_fault, NULL);