mtd: nand: gpmi: disable the clocks on errors

We should disable the previously enabled GPMI clocks in the error paths.

Also, when gpmi_enable_clk() fails simply return the error
code immediately rather than jumping to to the 'err_out' label.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: NMarek Vasut <marex@denx.de>
Acked-by: NHan Xu <han.xu@nxp.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/gpmi-nand/gpmi-lib.c

@@ -161,7 +161,7 @@ int gpmi_init(struct gpmi_nand_data *this)
 
 	ret = gpmi_enable_clk(this);
 	if (ret)
-		goto err_out;
+		return ret;
 	ret = gpmi_reset_block(r->gpmi_regs, false);
 	if (ret)
 		goto err_out;
@@ -197,6 +197,7 @@ int gpmi_init(struct gpmi_nand_data *this)
 	gpmi_disable_clk(this);
 	return 0;
 err_out:
+	gpmi_disable_clk(this);
 	return ret;
 }
 
@@ -270,7 +271,7 @@ int bch_set_geometry(struct gpmi_nand_data *this)
 
 	ret = gpmi_enable_clk(this);
 	if (ret)
-		goto err_out;
+		return ret;
 
 	/*
 	* Due to erratum #2847 of the MX23, the BCH cannot be soft reset on this
@@ -308,6 +309,7 @@ int bch_set_geometry(struct gpmi_nand_data *this)
 	gpmi_disable_clk(this);
 	return 0;
 err_out:
+	gpmi_disable_clk(this);
 	return ret;
 }