perf intel-pt: Factor out intel_pt_reposition()

Factor out intel_pt_reposition() so it can be reused.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-7-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/intel-pt-decoder/intel-pt-decoder.c

@@ -494,6 +494,14 @@ static inline void intel_pt_update_sample_time(struct intel_pt_decoder *decoder)
 	decoder->sample_insn_cnt = decoder->timestamp_insn_cnt;
 }
 
+static void intel_pt_reposition(struct intel_pt_decoder *decoder)
+{
+	decoder->ip = 0;
+	decoder->pkt_state = INTEL_PT_STATE_NO_PSB;
+	decoder->timestamp = 0;
+	decoder->have_tma = false;
+}
+
 static int intel_pt_get_data(struct intel_pt_decoder *decoder)
 {
 	struct intel_pt_buffer buffer = { .buf = 0, };
@@ -512,11 +520,8 @@ static int intel_pt_get_data(struct intel_pt_decoder *decoder)
 		return -ENODATA;
 	}
 	if (!buffer.consecutive) {
-		decoder->ip = 0;
-		decoder->pkt_state = INTEL_PT_STATE_NO_PSB;
+		intel_pt_reposition(decoder);
 		decoder->ref_timestamp = buffer.ref_timestamp;
-		decoder->timestamp = 0;
-		decoder->have_tma = false;
 		decoder->state.trace_nr = buffer.trace_nr;
 		intel_pt_log("Reference timestamp 0x%" PRIx64 "\n",
 			     decoder->ref_timestamp);