sata_dwc_460ex: fix resource leak on error path
commit 4aaa7187 upstream. DMA mapped IO should be unmapped on the error path in probe() and unconditionally on remove(). Fixes: 62936009 ([libata] Add 460EX on-chip SATA driver, sata_dwc_460ex) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
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