platform/x86/intel/pmt: mutex clean up

The header file for mutex usage and mutex_destroy() cleanup code is
absent from the crashlog.c module.

Add the header file and mutex_destroy().

Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Michael J. Ruhl <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ilpo Järvinen <[email protected]>

Author: mjruhl

drivers/platform/x86/intel/pmt/crashlog.c

@@ -12,6 +12,7 @@
 #include <linux/intel_vsec.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
@@ -262,8 +263,12 @@ static void pmt_crashlog_remove(struct auxiliary_device *auxdev)
 	struct pmt_crashlog_priv *priv = auxiliary_get_drvdata(auxdev);
 	int i;
 
-	for (i = 0; i < priv->num_entries; i++)
-		intel_pmt_dev_destroy(&priv->entry[i].entry, &pmt_crashlog_ns);
+	for (i = 0; i < priv->num_entries; i++) {
+		struct crashlog_entry *crashlog = &priv->entry[i];
+
+		intel_pmt_dev_destroy(&crashlog->entry, &pmt_crashlog_ns);
+		mutex_destroy(&crashlog->control_mutex);
+	}
 }
 
 static int pmt_crashlog_probe(struct auxiliary_device *auxdev,