devm_memremap: Fix error value when memremap failed
commit 93f834df upstream. devm_memremap() returns an ERR_PTR() value in case of error. However, it returns NULL when memremap() failed. This causes the caller, such as the pmem driver, to proceed and oops later. Change devm_memremap() to return ERR_PTR(-ENXIO) when memremap() failed. Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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