If edac_mc_add_mc() fails then we should preserve the error code, but
instead the current code returns success.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Link: http://lkml.kernel.org/r/20150128191351.GC10259@mwandaSigned-off-by: NBorislav Petkov <bp@suse.de>