Remove useless check for config-host.mak

If config-host.mak dont' exist, we have exited in the check at
the beginning of the file.
Once here, move the bits to the else part of the test at the beginning of
the file.

Patchworks-ID: 35191
Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Makefile

@@ -5,6 +5,9 @@ ifneq ($(wildcard config-host.mak),)
 all: build-all
 include config-host.mak
 include $(SRC_PATH)/rules.mak
+config-host.mak: configure
+	@echo $@ is out-of-date, running configure
+	@sed -n "/.*Configured with/s/[^:]*: //p" $@ | sh
 else
 config-host.mak:
 	@echo "Please call configure before running make!"
@@ -34,12 +37,6 @@ SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory)
 build-all: config-host.h
 	$(call quiet-command, $(MAKE) $(SUBDIR_MAKEFLAGS) $(TOOLS) $(DOCS) recurse-all,)
 
-config-host.mak: configure
-ifneq ($(wildcard config-host.mak),)
-	@echo $@ is out-of-date, running configure
-	@sed -n "/.*Configured with/s/[^:]*: //p" $@ | sh
-endif
-
 config-host.h: config-host.h-timestamp
 config-host.h-timestamp: config-host.mak