aesni_mb: fix build clean

The variable AESNI_MULTI_BUFFER_LIB_PATH is not required for
	make clean

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Declan Doherty <declan.doherty@intel.com>

diff --git a/drivers/crypto/aesni_mb/Makefile b/drivers/crypto/aesni_mb/Makefile
index 3bf83d1..ec65291 100644 (file)
--- a/drivers/crypto/aesni_mb/Makefile
+++ b/drivers/crypto/aesni_mb/Makefile
@@ -30,9 +30,11 @@
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
+ifneq ($(MAKECMDGOALS),clean)
 ifeq ($(AESNI_MULTI_BUFFER_LIB_PATH),)
 $(error "Please define AESNI_MULTI_BUFFER_LIB_PATH environment variable")
 endif
+endif
 
 # library name
 LIB = librte_pmd_aesni_mb.a