dax/pmem: Fix whitespace in dax_pmem

A few lines were whitespace damaged, with spaces at the start instead of
tabs. This was noticed while debugging an nfit_test failure, so fix
them.

Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Author: stellarhopper

drivers/dax/pmem/core.c

@@ -37,13 +37,13 @@ struct dev_dax *__dax_pmem_probe(struct device *dev, enum dev_dax_subsys subsys)
 	devm_nsio_disable(dev, nsio);
 
 	/* reserve the metadata area, device-dax will reserve the data */
-        pfn_sb = nd_pfn->pfn_sb;
+	pfn_sb = nd_pfn->pfn_sb;
 	offset = le64_to_cpu(pfn_sb->dataoff);
 	if (!devm_request_mem_region(dev, nsio->res.start, offset,
 				dev_name(&ndns->dev))) {
-                dev_warn(dev, "could not reserve metadata\n");
+		dev_warn(dev, "could not reserve metadata\n");
 		return ERR_PTR(-EBUSY);
-        }
+	}
 
 	rc = sscanf(dev_name(&ndns->dev), "namespace%d.%d", &region_id, &id);
 	if (rc != 2)