misc: pci_endpoint_test: Fix pci_endpoint_test_bars_read_bar() error handling

JIRA: https://issues.redhat.com/browse/RHEL-83611


Upstream Status: 2a93192d2058507b2e39b590fc1efa0e03344136

commit 2a93192d2058507b2e39b590fc1efa0e03344136
Author: Niklas Cassel <cassel@kernel.org>
Date:   Tue Feb 4 12:06:41 2025 +0100

    misc: pci_endpoint_test: Fix pci_endpoint_test_bars_read_bar() error handling

    Commit f26d37ee9bda ("misc: pci_endpoint_test: Fix IOCTL return value")
    changed the return value of pci_endpoint_test_bars_read_bar() from false
    to -EINVAL on error, however, it failed to update the error handling.

    Fixes: f26d37ee9bda ("misc: pci_endpoint_test: Fix IOCTL return value")
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
    Link: https://lore.kernel.org/r/20250204110640.570823-2-cassel@kernel.org


Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

Signed-off-by: Myron Stowe <mstowe@redhat.com>