plugins: unload plugin if early init fails

Change-Id: I32f68e2ee8f5d32962acdefb0193583f71d342b3
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vlib/pci/pci.h b/src/vlib/pci/pci.h
index ec805b3..a705671 100644
--- a/src/vlib/pci/pci.h
+++ b/src/vlib/pci/pci.h
@@ -159,6 +159,14 @@
     x.next_registration = pm->pci_device_registrations;         \
     pm->pci_device_registrations = &x;                          \
 }                                                               \
+static void __vlib_rm_pci_device_registration_##x (void)        \
+    __attribute__((__destructor__)) ;                           \
+static void __vlib_rm_pci_device_registration_##x (void)        \
+{                                                               \
+    vlib_pci_main_t * pm = &pci_main;                           \
+    VLIB_REMOVE_FROM_LINKED_LIST (pm->pci_device_registrations, \
+                                  &x, next_registration);       \
+}                                                               \
 __VA_ARGS__ pci_device_registration_t x
 
 clib_error_t *vlib_pci_bind_to_uio (vlib_pci_addr_t * addr,