clk:mmp:clk-of-mmp2: Free memory and Unmap region obtained by kzalloc and of_iomap

Free memory and memory mapping , if mmp2_clk_init is not successful.

Signed-off-by: Arvind Yadav <[e-mail]>
[[e-mail]: Put return at the right place]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/mmp/clk-of-mmp2.c

···
 	pxa_unit->mpmu_base = of_iomap(np, 0);
 	if (!pxa_unit->mpmu_base) {
 		pr_err("failed to map mpmu registers\n");
-		return;
+		goto free_memory;
 	}
 
 	pxa_unit->apmu_base = of_iomap(np, 1);
 	if (!pxa_unit->apmu_base) {
 		pr_err("failed to map apmu registers\n");
-		return;
+		goto unmap_mpmu_region;
 	}
 
 	pxa_unit->apbc_base = of_iomap(np, 2);
 	if (!pxa_unit->apbc_base) {
 		pr_err("failed to map apbc registers\n");
-		return;
+		goto unmap_apmu_region;
 	}
 
 	mmp_clk_init(np, &pxa_unit->unit, MMP2_NR_CLKS);
···
 	mmp2_axi_periph_clk_init(pxa_unit);
 
 	mmp2_clk_reset_init(np, pxa_unit);
+
+	return;
+
+unmap_apmu_region:
+	iounmap(pxa_unit->apmu_base);
+unmap_mpmu_region:
+	iounmap(pxa_unit->mpmu_base);
+free_memory:
+	kfree(pxa_unit);
 }
 
 CLK_OF_DECLARE(mmp2_clk, "marvell,mmp2-clock", mmp2_clk_init);