crypto: cavium - remove redundant null pointer check before kfree

kfree has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/cavium/cpt/cptvf_reqmanager.c

@@ -308,21 +308,11 @@ void do_request_cleanup(struct cpt_vf *cptvf,
 		}
 	}
 
-	if (info->scatter_components)
 	kzfree(info->scatter_components);
-
-	if (info->gather_components)
 	kzfree(info->gather_components);
-
-	if (info->out_buffer)
 	kzfree(info->out_buffer);
-
-	if (info->in_buffer)
 	kzfree(info->in_buffer);
-
-	if (info->completion_addr)
 	kzfree((void *)info->completion_addr);
-
 	kzfree(info);
 }