Merge branch 'bugfix/vfs_fat_sdmmc_mount_v3.3' into 'release/v3.3'

Fix memory leak upon failure of esp_vfs_fat_sdmmc_mount() (v3.3)

See merge request espressif/esp-idf!6394

components/fatfs/src/vfs_fat_sdmmc.c

@@ -158,6 +158,8 @@ fail:
     ff_diskio_unregister(pdrv);
     free(s_card);
     s_card = NULL;
+    free(s_base_path);
+    s_base_path = NULL;
     return err;
 }