qsv: Error out if getting session handle failed in avfilter

Solve some issues found by an automated code scansion.
Suppress the complain "variables 'handle' is used but maybe
uninitialized".

Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

3 files changed, 15 insertions, 0 deletions

diff --git a/libavfilter/qsvvpp.c b/libavfilter/qsvvpp.c
index f704517aee..75966b352d 100644
--- a/libavfilter/qsvvpp.c
+++ b/libavfilter/qsvvpp.c
@@ -503,6 +503,11 @@ static int init_vpp_session(AVFilterContext *avctx, QSVVPPContext *s)
         }
     }
 
+    if (ret != MFX_ERR_NONE) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting the session handle\n");
+        return AVERROR_UNKNOWN;
+    }
+
     /* create a "slave" session with those same properties, to be used for vpp */
     ret = MFXInit(impl, &ver, &s->session);
     if (ret != MFX_ERR_NONE) {
diff --git a/libavfilter/vf_deinterlace_qsv.c b/libavfilter/vf_deinterlace_qsv.c
index bb26a4dbfe..b659d424be 100644
--- a/libavfilter/vf_deinterlace_qsv.c
+++ b/libavfilter/vf_deinterlace_qsv.c
@@ -201,6 +201,11 @@ static int init_out_session(AVFilterContext *ctx)
         }
     }
 
+    if (err != MFX_ERR_NONE) {
+        av_log(ctx, AV_LOG_ERROR, "Error getting the session handle\n");
+        return AVERROR_UNKNOWN;
+    }
+
     /* create a "slave" session with those same properties, to be used for
      * actual deinterlacing */
     err = MFXInit(impl, &ver, &s->session);
diff --git a/libavfilter/vf_scale_qsv.c b/libavfilter/vf_scale_qsv.c
index 381844cdc4..e9bfff867d 100644
--- a/libavfilter/vf_scale_qsv.c
+++ b/libavfilter/vf_scale_qsv.c
@@ -300,6 +300,11 @@ static int init_out_session(AVFilterContext *ctx)
         }
     }
 
+    if (err != MFX_ERR_NONE) {
+        av_log(ctx, AV_LOG_ERROR, "Error getting the session handle\n");
+        return AVERROR_UNKNOWN;
+    }
+
     /* create a "slave" session with those same properties, to be used for
      * actual scaling */
     err = MFXInit(impl, &ver, &s->session);