mtd: tests: incorporate error message for mtdtest_write()

All callers of mtdtest_write() print the same error message on failure.
This incorporates the error message to mtdtest_write() and removes them
from the callers.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/tests/nandbiterrs.c b/drivers/mtd/tests/nandbiterrs.c
index 5a8c858..3cd3aab 100644
--- a/drivers/mtd/tests/nandbiterrs.c
+++ b/drivers/mtd/tests/nandbiterrs.c
@@ -102,16 +102,10 @@
 /* Writes wbuffer to page */
 static int write_page(int log)
 {
-	int err;
-
 	if (log)
 		pr_info("write_page\n");
 
-	err = mtdtest_write(mtd, offset, mtd->writesize, wbuffer);
-	if (err)
-		pr_err("error: write failed at %#llx\n", (long long)offset);
-
-	return err;
+	return mtdtest_write(mtd, offset, mtd->writesize, wbuffer);
 }
 
 /* Re-writes the data area while leaving the OOB alone. */