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powerpc/kexec: Fix build failure from uninitialised variable 

clang 14 won't build because ret is uninitialised and can be returned if
both prop and fdtprop are NULL.  Drop the ret variable and return an
error in that failure case.

Fixes: b1fc44eaa9 ("pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window")
Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220810054331.373761-1-ruscur@russell.cc
This commit is contained in:
Russell Currey 2022-08-10 15:43:31 +10:00 committed by Michael Ellerman
parent 59bab33a4f
commit 83ee9f2376
1 changed files with 5 additions and 5 deletions
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10
arch/powerpc/kexec/file_load_64.c
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@ -1043,17 +1043,17 @@ static int copy_property(void *fdt, int node_offset, const struct device_node *d
const char *propname)
{
const void *prop, *fdtprop;
int len = 0, fdtlen = 0, ret;
int len = 0, fdtlen = 0;
prop = of_get_property(dn, propname, &len);
fdtprop = fdt_getprop(fdt, node_offset, propname, &fdtlen);
if (fdtprop && !prop)
ret = fdt_delprop(fdt, node_offset, propname);
return fdt_delprop(fdt, node_offset, propname);
else if (prop)
ret = fdt_setprop(fdt, node_offset, propname, prop, len);
return ret;
return fdt_setprop(fdt, node_offset, propname, prop, len);
else
return -FDT_ERR_NOTFOUND;
}
static int update_pci_dma_nodes(void *fdt, const char *dmapropname)