anv: fix minor gen_ioctl(I915_PERF_IOCTL_CONFIG) error handling issue

Found by Coverity.

Fixes: 2001a80d4a8 ("anv: Implement VK_KHR_performance_query")
Signed-off-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6667>
diff --git a/src/intel/vulkan/anv_batch_chain.c b/src/intel/vulkan/anv_batch_chain.c
index ce429ff..c584f6f 100644
--- a/src/intel/vulkan/anv_batch_chain.c
+++ b/src/intel/vulkan/anv_batch_chain.c
@@ -1821,7 +1821,7 @@
          if (ret < 0) {
             result = anv_device_set_lost(device,
                                          "i915-perf config failed: %s",
-                                         strerror(ret));
+                                         strerror(errno));
          }
       }